Changing Potentiometer on 90 Marathon- wire colors question

jtregal · 02-17-2017, 11:11 PM

I'm switching out my old poteniometer but the new one has blue-brown colored wires instead of black-white. Can anyone tell me which color (blue or brown) corresponds to the original (black or white) going to the FNR Switch and control Module?

Also, any availability for a free downloadable service manual for a 90 marathon with solid state speed control? It appears every other cart is freely available but I don't see one for the electric marathon.

You guys are great and I appreciate this wonderful resource.

Thanks,

JT

cgtech · 02-17-2017, 11:17 PM

As long as the new sensor shows near 0 ohms at rest, and near 5000 ohm at full throttle, it won't matter. Just be super sure to plug the wires back onto pins #2 & #3 where they came from. It's not a "wrong polarity" type of circuit.

jtregal · 02-18-2017, 12:00 PM

Thx CG Tech, appreciate the guidance.

02-17-2017, 11:11 PM	#1
jtregal Not Yet Wild Join Date: Feb 2017 Posts: 3	Changing Potentiometer on 90 Marathon- wire colors question I'm switching out my old poteniometer but the new one has blue-brown colored wires instead of black-white. Can anyone tell me which color (blue or brown) corresponds to the original (black or white) going to the FNR Switch and control Module? Also, any availability for a free downloadable service manual for a 90 marathon with solid state speed control? It appears every other cart is freely available but I don't see one for the electric marathon. You guys are great and I appreciate this wonderful resource. Thanks, JT
jtregal Not Yet Wild Join Date: Feb 2017 Posts: 3

02-18-2017, 12:00 PM	#3
jtregal Not Yet Wild Join Date: Feb 2017 Posts: 3	Re: Changing Potentiometer on 90 Marathon- wire colors question Thx CG Tech, appreciate the guidance.
jtregal Not Yet Wild Join Date: Feb 2017 Posts: 3

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02-17-2017, 11:17 PM	#2
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: Changing Potentiometer on 90 Marathon- wire colors question As long as the new sensor shows near 0 ohms at rest, and near 5000 ohm at full throttle, it won't matter. Just be super sure to plug the wires back onto pins #2 & #3 where they came from. It's not a "wrong polarity" type of circuit.