1955 cub wiring

Mon Dec 16, 2013 3:56 pm

Hey guys, I'm about to replace the wiring in my cub FINALLY, so i've been reading up on the subject here. One thing that i can't quite figure out is whether or not my tractor is supposed to be positive or negative ground. Right now it's hooked up with negative ground and it runs OK, but the battery doesn't charge. of course, by the state of the wiring, there could definitely be something else causing that. The ammeter doesn't move at all.. ever. the wires for the lights are in varying stages of decay/missing, and I think someone bypassed the fuse holder... :shock: I've never done any vehicle wiring before, so forgive me if i'm asking stupid questions.. I'm just planning on replacing the wires one at a time so i know i'm not missing anything.

Re: 1955 cub wiring

Mon Dec 16, 2013 4:03 pm

All cubs with 6 volt system are positive ground

Re: 1955 cub wiring

Tue Dec 17, 2013 8:13 am

Eoghan, there are not any stupid questions. if you don't know, and don't ask, how will you ever find out the answers

Re: 1955 cub wiring

Tue Dec 17, 2013 8:52 am

I recommend that you get a complete wiring harness from John Brillman http://brillman.com/store/a-tractor/wire-harnesses.html. It will be correct with original type wire, terminals and length. I wired mine using a Brillman harness in about and hour. As a guide, I used a wiring diagram for my year cub, what was left of original wiring and instructions from Brillman. It was around $100, which was money well spent.

Re: 1955 cub wiring

Tue Dec 17, 2013 10:31 am

excellent, thanks guys!
BigHoss, that harness looks beautiful! i think maybe too beautiful for the dirty work she'll be doing.. i'd consider buying one if there was a less expensive (not braided cotton) version. I'm pretty sure i could make my own if i could decipher the wiring diagram.. :lol: maybe not.

Re: 1955 cub wiring

Tue Dec 17, 2013 11:19 am

I made my own, but my original harness was not all cut up, so fairly easy to copy. It took me the better part of a day to make, but crimp, solder, shrink tube every terminal is time consuming, especially when you forget to put shrink tube on the wire before you solder the connector!

Re: 1955 cub wiring

Tue Dec 17, 2013 11:34 am

Making your own is not all that difficult, especially if you're just going for functional. It doesn't have to be a harness. Just run the wires from point a to point b following where the originals were. When you're done you can tape or wire tie them into a bundle. As for deciphering the wiring harness really isn't much to it once you figure out what you have. Still have a generator? Magneto or distributor? Regulator or cutout? Which headlight switch? Fuse on dash or back of headlight switch? (If it's a late Cub then you get into 12V and key switches and all that, but a lot fewer of those)

This is a good time to stress good clean connections. A wire brush, sandpaper, and emory cloth are good to have handy to clean up the connections before you put the wire on. A little dielectric grease won't hurt either. If you can do a good strip and crimp on the wire then you should be fine.

With the battery unhooked I would start at the starter and put a big ring terminal on the end of a wire that would fit over the stud. The other end of that wire goes to the ammeter, so stretch out enough wire to reach the ammeter and give yourself some extra in case you have to redo a terminal now or ten years from now :D and put on the terminal and make the connection. Since you're at the ammeter put a terminal on the end of another wire and connect it up to the other side of the ammeter. That wire most likely will run to the regulator "bat" terminal so run it up under the gas tank down the right side of the Cub and up to the regulator, leave a little extra, add terminal, shine it up, add dielectric grease, make connection. You just keep going like that.

Re: 1955 cub wiring

Tue Dec 17, 2013 11:39 am

I got mine from a company called Brillmans. They were braided and color coded with diagram. I think I paid $100.

Re: 1955 cub wiring

Tue Dec 17, 2013 1:26 pm

Disclaimer: "No, I do not work for Brillman, Porch or any other vendors that make and sell wiring harnesses". I have been called frugal, even cheap by the ones who know me. :) :) :) :) So, I do not spend money when it is not justified. I am retired and probably have the time to make up wires for a cub. I was an industrial and manufacturing engineer in my other life. So, I love fixing things and making them work. That being said, $100 to me is a good investment for a complete wiring harness that is easy to install and works %100 from the get go. JMHO.

Re: 1955 cub wiring

Fri Dec 20, 2013 4:54 pm

First I would say if you don't have a basic understanding of simple automotive wiring then my recommendation is a prefabricated harness from whomever. If you are comfortable with building your own then I would go that route. I built my own and saved quite a bit.