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tedwall · May 1, 2009, 04:25 PM

I have an mtd 20 horse riding lawn mower the wiring has been disconnected from the solenoid and the grounds where do I hook the wires coming out of the harness? I have the battery leads hooked up 1 to the large solenoid post and one to chassis ground. The other solenoid wire I have running to the starter. There is only one wire post on the solenoid left ( comes from the key to start?) what color wire? And where does the green fused wire hook up? And the other green wire? Grounds? Help!

21boat · May 1, 2009, 08:06 PM

Can't find the actual manual but there are solenoids that are common and should help explain it

http://www.arcomarine.com/xhtml/Tech...%20circuts.pdf

http://www.small-engines.com/wirediag.html

Rivethead · May 2, 2009, 04:04 AM

I have an 18 horse MTD that may be wired the same? How many wires do you have coming off the ignition switch - 7 on mine.

tedwall · May 2, 2009, 03:50 PM

Originally Posted by Rivethead

I have an 18 horse MTD that may be wired the same? How many wires do you have coming off the ignition switch - 7 on mine.

I believe I have the same I have the wiring figured out except for landing the green fused wire at the solenoid, and the plain green wire..

tedwall · May 2, 2009, 04:03 PM

:D

Originally Posted by 21boat

Can't find the actual manual but there are solenoids that are common and should help explain it

http://www.arcomarine.com/xhtml/Tech...%20circuts.pdf

Basic Tractor wiring diagram

Thank you it confirmed I have everything wired correctly ill have to wire trace the gree wires and find wher to land them the fused green wire I would think was a hot wire but it ohms with the other green wire. Kind of confusing thanks your answer helped a lot..

Rivethead · May 2, 2009, 08:09 PM

We must have different tractors. I dug out the wiring diagram for the twin and single cylinder engines. Neither show the green to a fuse. It shows the green wire combined with the black from the battery and connected to the solenoid mounting bolt. Red in and out on the solenoid. Small red line from the solenoid to the fuse and exiting as black to the switch.

Green from the ground above to the headlights top connector...

tedwall · May 4, 2009, 09:03 AM

Thanks rivithead, much help, I will remove the fused green wire from the termination, land the other green to ground and see if it will start, then I can tap the fused wire to the hot and see if the fuse blows.

21boat · May 4, 2009, 09:37 AM

Most "green" wires are ground and thus the fuse on it so it can be used as a ground but a short circuit would cause the fuse to blow so a wiring harness doesn't melt in a short. I have seen a whole harness on a rider melt. So fuse is the reason. Is there any power on the fuse ends with ignition on? Another indication is solenoids either ground on by bolting on a grounded metal frame or bu wire connected to it. Don't know which one you have?

tedwall · May 4, 2009, 11:36 AM

Originally Posted by 21boat

Most "green" wires are ground and thus the fuse on it so it can be used as a ground but a short circuit would cause the fuse to blow so a wiring harness doesn't melt in a short. I have seen a whole harness on a rider melt. So fuse is the reason. Is there any power on the fuse ends with ignition on? Another indication is solenoids either ground on by bolting on a grounded metal frame or bu wire connected to it. Don't know which one you have?

Thank you for your input.. very very helpful, I will try landing them on grould at worst case can only blow the fuse... my soenoid grounds through the mounting bracket.