C160 key switch which wires to which points?

[rustyoldjunk 127]

i know i said the C160 had to wait but i like this machine alot and want it up running and driving so i kept making time.its all together and almost ready to run.i just have to figure out which ignition wire goes where.im thinking i only need three of the 5 wires.the two to each side of the amp gauge and one to the rectifier then the same three go to: the silenoid (one to the big post on the battery side and

one to the little post on the battery side) and the third to the + side of the coil but which wires go where?can someone maybe make a sketch? now the reason im in this boat is two fold.first the wiring harness is gone and im using the C100 for reference but i dont want to tear its factory harness apart to get a positive look and two im the opposite of a wiring expert i dont like it and avoid it if possible.the charts i have found i cant make out which is what.how i got to this point:i pullied a wiring harness from the shelf that i had saved from some off brand tractor that for the ignition switch plug cut the wires i didnt need and started running the ones i did.so........ please if you can please help the :imstupid: guy and he will be very very grateful

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[rustyoldjunk 127]

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[TT-(Moderator) 1,162]

Any questions, just ask! :whistle:

[rustyoldjunk 127]

thanks very much TT i will give this a try.

[TT-(Moderator) 1,162]

Jim, I noticed there's no reference markings on the ignition switch on that schematic.....

The 5 terminals should be marked R, B, I, S, and A on the P/N 103990 switch. (or equivalent battery ignition switch)

"R" is for the wire from the B+ terminal on the regulator/rectifier.

"B" is from the negative post on the Amp gauge.

"I" goes to the "+" terminal on the ignition coil. (through the safety switch - if used)

"S" goes to the small post on the starter solenoid (through the safety switch - if used)

"A" is the accessory terminal for headlight power.

[rustyoldjunk 127]

many thanks TT im going to print this off and take it out to the garage to give it a quick shot before i head in to work.

[rustyoldjunk 127]

well my ignition switch is not marked in the back telling me which one is which.so i trial and erored it with no luck.im off to work will give it another shot over the weekend.

[CasualObserver 3,411]

If you can... take a picture of the back of your switch and post it... someone here will be able to tell you which prong should be what.

[CasualObserver 3,411]

Jim, came across a different c-series wiring diagram that had this important part that was missing earlier.... Hope it helps.

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[CasualObserver 3,411]

and here's the whole diagram so you can see it in one piece.

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[rustyoldjunk 127]

thanks Jason that will help.i really need to get some manuals.with storms last night some family members are without power so im busy today fixing generators.i will hopefully get back to it in a day or two.the libary has some big "small tractor" manuals that go brand by brand,model by model.i want to see about getting one of those.

[rustyoldjunk 127]

ok this ignition is going to drive me crazy .did i mention i hate wiring? i have wired it and rewired it several times with no luck.the closest i have gotten was when i turned the key to run the starter constantly turned over .my ignition switch isnt marked and that is not helping.can someone maybe tell me exactly which prong goes to which wire? here is a pictire of the backside of the switch.i feel :imstupid: having this much irritation and trouble with 5 little wires.jim

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[TT-(Moderator) 1,162]

Try this, Jim:

[rustyoldjunk 127]

thanks TT.i will give it a whirl.

[rustyoldjunk 127]

these pics seem to give at least three different ways to run the ignition switch wires.so im still searching,trying to get it wired this evening.at this point the way i have it wired.it spins the engine over and the volt guage seems to be working but i dont have fire to the coil wire.if you were looking at the 5 prong plug with the 5th prong at the bottom i have the top 2 left to right a-b then the middle 2 prongs left to right s-r the bottom center prong is I.any ideas? i switched the r and b and i have fire to the coil and starter all the time with the key off but with it on i had nothing so i switched it back.

[TT-(Moderator) 1,162]

I just realized that the diagram I recently posted is the same as the one Jason posted - which is of the correct switch for your tractor.

Pull the switch out of the dash and clean off the white colored insulator material around where the terminals are riveted. I have yet to see an Indak switch that doesn't have the letters "stamped" there. You can't do a custom wiring job unless you can verify the location of the terminals - or you'll fry something if you haven't already.

You only need three wires hooked to the switch to get the engine to turn over and start, and one more wire to the fourth terminal to charge the battery. See if the engine donor tractor has a switch with the letters if this one doesn't.

[rustyoldjunk 127]

first off,Jason and TT thank you for your help and second,thank you for your patience TT while i bitched moaned whined and begged for help thru this little aventure.TT just kept answering questions and never once laughed at me (at least out loud).being a wiring rookie,i made things harder on myself by changing ignition switches and silenoids woundering if they were bad,in the process i figured out that even if the prongs are the same it doesnt mean the key switches wire the same.after changing silenoids and key switches back.i finally got it wired right.i put the tank on,changed out fuel filters ran the gas line and took it for a test ride,then came back put the clutch spring on and adjusted the brake linkage and took a long test ride.it runs and drives great,better then my C100 i think.once again thank you jason and TT.

[TT-(Moderator) 1,162]

:whistle: , Jim!

We wouldn't have gave up until you got it running. (and not once did I laugh!)

I've been there too many times myself! :D

[rustyoldjunk 127]

thanks again TT.this is a great and very valuable board.its the friendly knowledgable people like yourself,willing to help fellow wheel horse nuts,who arent so well versed in the wheel horse world,that make this board what it is.jim

[CasualObserver 3,411]

You're most welcome. That's what this board is for, questions, answers and discussions... not to laugh at somebody or make anyone feel unwanted or less of a collector. We're all here because we love these little red machines!

You are right though, and I'm glad you realized it. You can't just change switches around... there are so many versions out there made for so many different applications. three prong, four prong, five, six, seven.... and then like you said... they can be arranged multiple ways depending on who and what it was originally made for.

Glad you got your tractor running, now

Maybe you can do a wiring FAQ for us?

[rustyoldjunk 127]

thanks Jason for your help.these little red machines are great little rides,arent they?as for a wiring FAQ im pretty sure im not the guy.lol