Years later you are the man. This is golden information.

Thank you, that is my exact problem. I made the same assumption, that it was a ground wire because it was white and tied it up to my ground from the taillight section of the harness. I am blowing the #1 fuse as well. You just saved me a TON of trouble shooting. Thank you.

This video took me straight to my 'short' on my 97 suburban ! It was a self inflicted problem when I rewired my trailer light harness. Exact same wire, and location. It's been layed up for months and I feel like an idiot now ... Thank you very much !

Admittedly, I had to watch you on 1.5 speed, but I do appreciate your video having seen it all the way through now. I'm chasing a tail light, brake light problem right now on a '99 that I got two days ago. Somebody glued the bulbs in... I'm sure that solved their problem. 🙄 Anyways, replaced the circuit board for the lights and still don't have any. Thanks for pointing in the right direction

I think you just showed me the solution to my problem. We’ve checked everything and had no luck at all figuring out how to fix it. Thank you!!

Appreciate the breakdown from point to point. I still had to replace the switch, but this would have saved me if my relay was bad.

Thank you sir thank you I have the same pickup truck same year same colors this video was helpful

This is EXACTLY what I was looking for! I have a 2000 GMC Sierra 2500 and this is exactly what's happening to my fuses. Ty! Ty for the vid!

Thank you sir” SAME EXACT ISSUE NOW I FIXED IT !!!! Thank you for the knowledge!!! Your awesome

That small white wire at the rear is for a third brake light, not for trailer. Example: adding a topper shell with a third brake light in the top center.

Great video! Thank you! You just saved me at least five steps to finding my problem. Also to note, if your rear turn signals are working then the continuity on the center pins of the 4 pin white plug to the frame harness would be fine. I have no power from the brake light switch to the relay pin when the pedal is depressed. I can’t wait to go through all the wire mess (and Scotchlocks) under the dash of whoever installed the trailer brake controller.

Thanks so much you really do an excellent job of explaining everything you're very clear with your instructions and to the point I appreciate that so much

HAving the same issue. Will check tomorrow and see. Atleast now I know what to test. Thanks a bunch!

Wow great video! That is the exact same issue I'm having with my truck. So now I can fix it. Thank you!!

Great Video, camera work was spot on. I now know my brake switch is bad. Thanks

Nice video, just did a frame swap and did the same thing. Thanks for saving me time.

Was goin say sounds like a short in wire do with trailer hook up Glad u fig it out bro

Thankyou! I would have spent a lot of time and money trying to find this!!

Thanks for the info you got me looking in the right location and mine ended up being a bad connection at dash side fuse box

I just had the same problem on Thursday. I had no brake lights, no signal lights and no driving. I replaced the 33 year old stop light switch, the 33 year old turn flasher, and cleaned the ground. I got power on driver side, but I one on right side. I found that the trailer harness was melted. I disconnected it and gooed up tail light harness, wala, everything started working. It was a 1990 Chevy Silverado 5.7. Hope this helps someone. Have a great weekend.

Im am so glad i watched this. I just got done doing same thing only it was pinched further up on frame. Thamks so much

I over looked that #1 20amp thanks brother

Thanks for the info. I will check my k1500 and see if I can get my brake lights to work. Let you know later😀

Great video man I was burn fuses like crazy 😂😂

Thank goodness for your video cause i just picked a 1998 chevy silverado and it's got the same issue

You helped me so much I was about to put alot of money in and that fuses worked

DEAD ON MY MAN, we been fightin this Old 97 3500 Dually shop truck for DAYS !!! This is a Total Dumbass Idea by GM, Dunno WTF They was thinking here, Brake Switch Works just the Opposite of what you would think. Anyhow, We Had The High Stop Light Working, and The Rear Brake Lights was on all the Time with the Brake Switch NOT ENGAUGED, and when you would Engauge the Brake Switch, the Rear Brake Lights would GO OUT when the Switch was ENGAUGED, High Center Still Working. The Brake Switch Had Hot on the ORANGE at the Brake Light Switch, and had Power at the WHITE on the Switch when Engauging it, which is what Operates the High Center Light that is Tied into I believe the Daytime Running Lights ETC, and no Power to any Other wires On The Brake Switch, unless you Turned the Key on, then there was 3 Hot Total. So anyhow, after watching This AWESOME VIDEO, we Checked the Relay as you showed, we Had the Constant Power, we had Power In From The Brake Switch, DID NOT HAVE GROUND !!! Sooo...we took a Jumper from the Brake Switch In, to Brake Switch out on the Relay, going to the MFS, and BAM, we Got The Rear Brake Lights To Come on, telling us the Wiring To the Rear Lights, the Light Sockets, Bulbs ETC was all good. So then, following your Video, we supplied a Ground to our Dead Ground Pin at the Relay, and she Clicked and The Brake Lights Now Works properly !!! What a Shit Storm to figure out, but MAN you Nailed it, I bet that MOST Certified GM Tech's Could not figure This Out !!! And 1 note to Add, we was NOT Blowing Fuses, just did not have Ground at The Relay, all We did was supply Ground around The Bottom of the Relay Pin to Test It, we are gonna Pull the Under Hood Relay/Fuse Box and Tie in a good Ground

Thank you, you are a life saver

good video, trying to fix my brake lights not working on a 2006 Tahoe, the tail light assembly is different on those but this gave me some ideas for sure.

Your video helped me alot same happened to mine

Thank you this helps me with my trailer brake signal wire for controller

It does help. Thanks brotha

Thank you for your time this video does help a lot not saying it's the same problem I have but it's a good place to start.

I needed this bro thanks

That was funny he turned the key on I'm sitting in my truck watching this video I thought it was my buzzer going on LOL

My 1998 Durango had no brake lights. Pulled out fuses, looked good. Changed brake switch, still nothing. All new bulbs, still no lights. Decided to swap another 20amp fuse for the brake switch fuse that "looked" good and THE BRAKES CAME ON!!! Lesson learned. Dont just look at fuses to see if they look bad. Test them or change them to be sure.

Lol I just had this problem and took all dam day to figure it out thinking the white wire was a common ground lol

Yeah brother big help thanks

Great video

I just hook up a 7 blade trailer connector all was good until I zipped tied it up then it blew number 16 I can’t remember the exact number but it’s 16/17 something like that when I put on turn signal now I don’t have brake light re wired the plug again found some old wires up near the bed that were exposed took care of them out everything back to together everything works no blowing fuses. But still no brake lights . Might be the relay I’ll check that now that I’ve learned the system from your video I’m sure I’ll figure it out thanks

Great videos, thx

You know what I think you just solve my problem too because somebody Chopped all the wires to put a trailer and trailer like on my truck switch the switchboard on the left side the left reverse light work the right didn't okay I went and bought a new switchboard for the right everything went to hell everything went to hell when I switch the right switchboard I put everything back together and I think I'm just missing the ground because everything works blinkers running lights reverse lights no brake lights

Thanks I was stumped for a minute. My logical thinking wasn't working huh.

Thank you!!!!!! :)

Im having an issue on my 94 k1500. Both tail lights and turn signals work but no brake tail lights, the 3rd brake light works. Iv checked the fuses and its all good, one thing i didn't check was the relay and the connector inside the engine bay he tested with the 2 middle prongs. 🤔

My white wire was actually still labeled as brakes. In wiring diagram of I believe haynes but not chiltons or vice versa as trailer hookups. Those other two fat wires were labeled too. Although neither of mine are energized. White works though. 1995 silv

interesting, i like the example for the relay, i dont have so called trailer extended wiring, just the 4 wire plug, i replaced that so called easy brake switch! nothing easy about that! no room! only one way for it to get off! and then?? the friggin keeper clip. but?? ill go at it once again.

My 99 yukon has no brake relay terminals. What now? My hazard light switch is broken internally. Wonder if that caused my brake lights to stop lighting? It's $100.

THANK YOU

Hey, this is the most in depth video I've seen. Can you tell me what color wire is the power in from the switch to the relay, and what one is the power out of the relay. There's a white and light blue. And if the ground for the relay is black with a white stripe? And does the ground go into the bulkhead or is it grounded in the bay. Great video! Thanks

Did you check the rear circuit boards? I had the same problem and replaced the circuit boards and it fixed it

Is this the same for a ‘95 TBI setup? I have the same fuse panel but my lights are reading differently with a test light, all light up with brake depressed but the front drivers side doesn’t light at any point whether brake is depressed or not

What would you test if both brake lights and blinkers don’t work but running lights do?

From the sound of it you’re not from Georgia but if you are ever in the Athens area hit me up I owe you a cold one.

With my circuit tester the light is really dim when testing the break switch. Also it only lights up if the truck is running. Would you have any suggestions on what may be the reason on that?

Great video led me right to my problem

I've got issues with no turn signals or signal indicators in my dash and no tail lights when just driving but when I brake my brake lights come on but so do the turn signal indicators the left and right at the same time in my dash and they stay solid not flashing

My 1995 Suburban brake relay, at least the relay that is in that location, is just sitting in the fuse box not connected to anything. There’s no contacts for it to plug into. Also has 5 prongs on the relay.

I was really hopeful that was going to be my problem as I have the exact same symptoms and a random white “ground” that I haven’t found the source of. After watching this video, I ran out to my truck, disconnected it, stepped on the brake.. popped the fuse. Feels like im really just chasing my tail on this one. Changed the brake switch, changed the multifunction switch, still can’t seem to find my short

I have 95 c 2500 I took off utility box to put flat bed so different light and light works sometimes but real low

I checked the relay for power from switch and that's good, I do not have a constant 12v. What would be my next step?

On the plug in the front where u checked the blinkers with the test light Where would the problem be if the blinkers weren't blinking And the blinker relay is good an no blown fuse ? I have no blinkers But everything else works brakes. Running lights flashers

Right on

My lanta…. I think I have a chance at solving my brake light and fuse poppping issue now on my 94 s10. Sounds like similar deal.

This video helped me find the brake light problem but he did not mention the 60 amp fuse the feed the flasher And brake light whicb is located

I had an issue where when I had tail lights I didn't have brake lights but when I had brake lights I didn't have to turn signals so I just switched out the rear harness and reconnected the brake light wire into the corners that I got and we did grounds and it worked for about 3 months and now I don't have brake lights again but when I turn on either turn signal they both turn on and I switched out my headlight switch and check the tail lights in the back to make sure they didn't have water damage and they're fine cuz I don't believe this truck has a hazard lights option..... Any ideas?

that orange cable under the truck where does that connect to?

I watch your video about testing your relay, I checked the four prong the ground work and the out work the first to work but the12 volts consistent don't,and tested the break light pron itdid not working is my box bad

What if I have power to my trailer breaks when my brakes are off but not of and my binkers blink fast but brake lights don’t work

Hello my name is shorty , my 1999 Tahoe doesn't have a light relay fuse & no place on the panel to put it ..Also I don't have brake lights or back hazard lights or BLINKERS..What shall I do??? Advice needed ASAP THANKS IN ADVANCE!!

Amy thoughts why I’m not getting power to my reverse lights? All my other lights are working! 96 Silverado! Thx!

What if I don't have any 12 volt power to my brake switch relay but I'm getting power to my brake relay from my brake switch?

I am at a loss. Checking where that relay would be on my suburban has zero pin connections

Hello I have the same problem with the difference that the white wire at the back I have taped off not grounded but I still have no brake lights, signal lights and parking lights great but not brake lights ??? That white cable gets power when I step on the brakes ????what else do you think I can be .

To fix the spongy brake pedal you need a new brake booster mine does the same sound

What does it mean if you have no 12 v constant on fuse box

Well my truck is a 97 Chevy and for some odd reason my brake light stays on. I replaced the brake switch. I replace the relay. I replaced the light bar harness on the tail light and the one thing I did not replace is for the turn signal windshield wiper the hazard and the cruise control. Someone told me I have to replace that to make my brake light to start working. If I put the fuse back in my brake lights are on that's the only thing I need replaced on my truck

Need a suggestion on getting my 1994 chevy silverado truck to turn off. drove it yesterday and it was fine, but turned off truck and lights wont go off. Suggestions?

I'm so confused when I press my brakes the turn signals go on, I pulled out the rear lights and the relay still goes off for the turn signals

Anyone know why someone would take brake relay out and wire in from those sockets bought a 97k1500 and that's what the guy did all other rear lights work except for breaks

Don't hear my relay engaging, any ideas?

I don't have any power to the two center pins, on the plug. Any suggestions?

All my wires are broken off or cut from switch and I can't locate the six wires that feed brake light switch. Still 15 hrs in and can't locate wires

What if you dont have power to center pins, have power to the very end pin

I have absolutely no power on any of the break relay posts, any ideas?

My 91 Silverado doesn't have a brake light relay. 1991 Chevy Silverado 1500 2WD. I have running lights, backup lights and both turn signals working. But no break lights and no emergency flasher lights. Already replaced brake switch, fuses and bulbs. Still no brake lights. No bad grounds found. We have tried just about everything we can think of. We need the break lights to pass the inspection. Do turn signal lights and brake lights share the same circuit on older vehicles? Could it be a bad turn signal switch even though the turn signals work fine?

Ok so I have the same issue just no running lights brake lights blinkers and etc all work I’ve switched the circuit boards and put in a fuse what should I do

My tailights are always on, when I step on the brake pedal third light turns on and the taillights turn off. Everything else works like its supposed too. Anyone else have the same problem?

Do you have to drop the steering column?

I have power to brake switch without the pedal pressed. Why??

The 12v constant for my 1998 truck has no power to it. Brake lights aren't working. Daytime lights do. I'm pretty confused on what to do.

Useful video but next time hold off on the gum till after

Had same problem

That’s not a Silverado. That’s a 1500. It may or may not have the Silverado trim package.

Im having this problem on my 97, ive changed the brake switch already and still have no power from the brake switch. Am i missing something ?

Okay, my brake lights work, and my turn signals as well, but I have no tail lights, and if I turn my headlights on, I have no brake/turn lights, already switched the tail light boards, and all the bulbs are good. I’m stuck

Bra k e light s stay on never g o off...

Ok I don’t have constant power to relay? So now what

I have no power to the relay with a brand new brake switch

i have 94 same issue tho filiments work