Wiring Harness

rrucker · Mar 12, 2015

8N 1948, 6volt front mount serial number 135902

I bought the expensive wiring harness from YT. Used the manual and instructions provided.

Voltage Regulator is a replacement. has B (battery) F (field) and A (arm). Checked made sure it was wired correctly. There was one remaining black wire that instructions said ground.

So, I attached it to the mounting base plate of the VR, connected battery and turned on ignition switch to start the tractor. Wiring harness started smoking melted the sucker.

Anybody know where that little black wire should have been attached to?

Del Huebner · Mar 12, 2015

On my 49 8N the black wire goes from the ground terminal on the generator to the ground on the voltage regulator.

Bob · Mar 12, 2015

A BETTER question would be "what do you have the other end of the black wire connected to"?

IIRC, the other end should be connected to the frame ground on the generator.

I'm gonna gov out on a limb here and GUESS you have it connected to something "hot"!

rrucker · Mar 12, 2015

Dale,

Thanks for the picture. Looks like we have the same wiring harness.

I took the VR off and compared it yours. There is no where to connect the black wire from. the VR says 6 volt pos ground and I bought it from YT. Guess they sent me the wrong one.

rrucker · Mar 12, 2015

Bob,

Thanks for the quick reply!

I have a black wire going from the G post on the generator and it should (I think) connect somewhere on the voltage regulator.

But there is no post to connect it to. I mounted it to the base plate of the VR, and that didn't work. Think I need to look closer at the VR.

Del Huebner · Mar 12, 2015

This is the best picture I could get of how mine is hooked up.

rrucker · Mar 12, 2015

Del,4

Thank you!

JMOR · Mar 12, 2015

(quoted from post at 13:58:53 03/12/15) Del,4

Thank you!

nd the cause turned out to be_________?

cowdog · Mar 12, 2015

Not necesaarily the black wire
It happenedwhen you turned the key on. Sounds like either the vr was bad and it was trying to motor the generator which would be pretty tough belted to the engine or it was a B circuit vr which energized the wrong part of the gen.

greywolf224 · Mar 14, 2015

(quoted from post at 14:04:15 03/12/15)

(quoted from post at 13:58:53 03/12/15) Del,4

Thank you!

Click to expand...

nd the cause turned out to be_________?

Guess we will never know.

I was interested also.

rrucker · Jul 17, 2015

not sure what is going on. replaced the wiring harness and it did it again. VR came from YT, guess I'll replace it again and see what happens. I really want this up and running.

Wiring Harness

rrucker

Member

Del Huebner

Member

Bob

Well-known Member

rrucker

Member

rrucker

Member

Del Huebner

Member

rrucker

Member

JMOR

Well-known Member

cowdog

Member

greywolf224

Member

rrucker

Member

Similar threads