Farmall 140 wiring harness

Just finished replacing the engine in my 1962 140 and found the same wire that you described. The wiring was all taped up, and I pulled the tape loose without really paying attention to what wire went where concerning the lights. After firing the new engine up (which is another story in itself) I proceeded to straighten up the wiring. Got both front headlights and the rear working just fine, but never did figure out where that heavier guage wire went. Mine originated somewhere near the generator and went to just beside the seat. I just put a wire tap on both ends, taped them up and slid a cover over the whole harness.

Mitch

p.s. Never would have gotten that engine and clutch replaced and fired up if it hadn't been for you fine folk on this dissucion forum. Many thanks. Got most of my garden in the ground before the monsoon started in Carolina. MT

On the wire, all I had at my disposal yesterday, was wiring diagram from my 130 manual. It doesn't show this wire, even as an option. My son had picked up a generic service manual whitch covers 100, 130 and 140. I spoke with Sandy last evening, he briefly scaned the wiring harness section of this book, no large green wire. He was going to read a bit more on this to see if it may be covered under options, etc.

However I don't believe the 10 or 12 gauge wire was ever intended for mag kill switch. Diagrams I have got my hands on today show all mag and distributor ign. wires going along right side of tractor. This heavy wire was made right into the original harness that goes along left side of tractor. In that harness is wires to head lights, 2 wires from generator to regulator, two wires from regulator to ign switch and ampmeter and this heavy green wire, which is not hooked at either end.

My suspicion is this wire is intended for an attachment made for these tractors. Since Mitch found same in his 62 - 140. I have owned 3 Super As and 2 - 130s and none of them had this wire. This looks to me as though wire was designed for an electro magnet, electric clutch, real heavy lights, etc. May be something to do with liquid fertilizer side dress eq. Obviously something new around 1960.

Now here is a good question, how many of you guys have found this wire in the harness of your offset Farmall.

Just a thought...read something somewhere that mentioned a horn...is that possible?!?

Mitch

I must say I have to go with horn idea, first all wiring diagrams on older offsets show mag wire going along right side of tractor, secondly mag. would not require a heavy wire like this. Finally SA, 100 and 130 did not have this wire in harness, and this fact tells me the large wire is for something new as oposed to something old. Mag. and horn respectively will fit that description.

You do as Mitch did, check your manual, I think you will find horn as an option.