2:37 "u understand that right? Right.. " made my day 😂 luckily i do understand that.

Hello The Other Guy, Great video once again. I saw a few things you might want to consider? 1. You need a fuse, or new style resettable breaker if possible but kind of expensive from the battery to your relay, fuse block. if something happens to that wire it is not fused. 2. The relay you used to turn on the fuse box is too small, it's only a 30/40 amp relay on a 100 amp fuse block. If you use more than 30 amps on your fuse block you're pulling too many amps through the relay. another mistake people make is putting 30 amp fuses in each slot, remember it's a total of a 100 amps on the box max and 30 amp max per slot most of the time. 3. Might consider using a bus bar instead of running all of your wires to the battery and making a wire hazard, too many connections connected together on one battery bolt. 4. Wire Awg, yours looks good but might think about what Awg you need for a 100 amp box. both positive and negative need to be the same Awg.

Thank you for your excellent explanation of how a relay switch works!

I did this on my atv SxS a year ago following your steps and it has been working great. Today I hit a mud hole very fast trying to get through it. A chunk of mud splashed up and completely covered all of posts. Now the 87 post doesn't work. So I am guessing that the wet mud caused the relay to burn out. Is this right? Nothing was drawing on the fuse box but the low psi fuel pump which only draws 1 amp.

Awesome easy and straight to the point. Glad I didn't have to make the video cuz I have the same box with no instructions

Thank you for the relay information!

could you list the wire gauges that you used for each section please? Thanks.

Great video, very informative

Also by looking at the negative terminal those screws are for your negative wires and the sides are for positive wires.

Great Video! I watched the video over and noticed that your single cable going to the battery suddenly became two. Could you explain? Thanks.

Great video. Question for you from non-electrician. What is the relay wiring if I want fuse box power to be OFF when the ignition is ON, and fuse box power ON when the ignition is OFF... to hook up a 110V - 112V siren in the engine compartment. It is triggered by a wireless infrared motion sensor under car to scare away catalytic converter thieves.

Do i need a relay? Or can I just have the fuse box hooked directly to battery if I want power when the ignition is off?

Tapping off the battery, always should be fused. Also not sure what devices you plan to take off the sub-panel but the main supply wire coming from battery is what? 14 gauge?? You need to understand a fuse or breakers job is to protect the wire, you have a small gauge wire supplying a potentially large sub-panel and its not fused....recipe for a disaster

I'm working on doing the same thing and you're direction has helped me out. Is it nenecessary to fuse up the wire from the battery to the aftermarket fuse box ? Also what guage wire do you use when connected to the relay ?

Say I want to connect my led bar to the fuse box and want it to be activated by a switch in the cab where would I need to put the switch in the circuit thanks 🙏🏻

Shouldn’t he have installed a fuse before the relay to power the distribution block ?

Thanks for this. I've been looking for this for ages. I was going to connect my fuse block power source to the alternator. But that means I only have power when the engine is turning over. One question, where do I connect the wire in the cabin fuse block. I was thinking tapping into a acc fuse there?. Is this correct.

Unless the relay block is the same voltage which is over a hundred amps or more you are lowering the power of the block. Because that looks only like a 30 amp relay and you do not have to put a relay on the fuse panel really because when the key dies the power dies unless you use a switch on a accessory which then a relay can be used along with the switch lower but if you put the relay between the battery and the whole fuse panel itself unless it is the same amperage as the block you are lowering the power of the block therefore disabling some of your voltage possibilities. Circuit breaker would be better. Relay for initial voltage increase supply for fuse not steady current at same voltage . Like using a 20 amp fuse for 500 watt amp and wanting watts to stay 500

can u do tha to my Car where u at

Never use after market fuse boxes. Mine fried and the replacement is 1500