Simpler way to install magnets - us thin construction paper 1 inch wide and make one complete revolution around driveshaft. Cut the paper so the ends of the paper butt up to one another. Take the paper, fold it exactly halfway two times. Where the fold marks are on the paper, highlight them with a permanent marker. Wrap paper around driveshaft and mark driveshaft where the 4 marks are and voila - no math required.

Pete, This post is 4 years old. I doubt if you see the comments anymore. I want to compliment you on this video. I bought an Ididit steering column over 25 years ago with the cruise switch directional stalk installed. I have been putting off installing the cruise controller. But, I decided this is the year. My 47 Ford 302 powered street rod is up on stands to change transmission oil. I needed to use the drive shaft signal generator that is included in the Dakota kit you installed. The Ididit kit uses a speedometer cable signal generator. My 74 year old speedometer sounds like a cement mixer, so I pulled the cable. I called Rostra, got the part number for the drive shaft sensor kit. I ordered it from Amazon and the Rostra Ididit controller kit from Summit. Thanks again for the excellent instillation video. You quoted 15 hours to install. If I hadn't seen your video, it would take that long. I will be surprised if it takes 10 hours after watching your video......I still have trouble conceiving how you video guys can take the time to make high quality videos. Thanks again!

Math. Yes! One of the first things I tell my students at the beginning of the year is that we are going to use math in the shop. I've had kids tell me they learned more about math in my woodworking class than in in their math class. I don't know about that other than applying it in a real world situation helps them make the connection. Another thing I tell my students is that there is alway more than one way to approach a problem. If I didn't have a calculator handy, or I didn't know the driveshaft diameter, an alternative to using the math would be to wrap a strip of paper around the driveshaft and cut it to length to match the circumference, then fold it in half once, then again, to give you four equal segments. You could then use it as a template to lay out the magnet position. Awesome video as always Pete! Thanks, Bill.

That's some good creative work on that bezel. Awesome!

Hey Partner, I just installed a Rostra Unit in my 63 Ford Fairlane. You vid was invaluable!! Thank you so much!!

Great video and really like where the owner wanted to mount the cruise switch panel.

My parents has SEARS install one like this when I was a kid. Same magnet on the drive shaft and all. It worked until it saw a winter in Rochester.

Wrap a tape measure around the drive shaft and divide by 4.

Nice install. I especially like the ashtray conversion

Thanks for the help. Question- do you know what size loom it took to get all the wires from the box to your firewall?

Hey mate do we need a clutch switch if it’s a manual? What would happen if you pressed the clutch while cruise was on? Or changed gears

Ditch the magnets.. get the optional signal generator

could it be installed in manual car ? lada 1995

Nice install, unless your a smoker. I'm guessing the owner is not. LOL

Do they make a kit so I can hook it up to a tach wire on my alternator?

What if you don’t have a tachometer? 🤔

You are making the math a bit too hard. One method: calculate the circumference of the driveshaft & divide by 4. Another: Use a carpenters flexible tape (the type that rolls back into a small case). Wrap the tape tightly around the driveshaft & measure using the 1" mark as an indicator to get a numerical reading off the tape. Subtract 1" from the measurement to get the exact circumference. When using this method in layout work the term is "burn an inch". Again divide by 4. However you do it the layout process is going to be difficult. Doing it in metric will be easier because all the math answers will be in digital rather than some odd variation of 1/64", 1/32", 1/16" & so on. Also, if one of these magnets falls off the system will shut down. Been there, had it happen.

Way too much unnecessary math here. It's simple just measure the diameter of the shaft and divide that by four.