Just wondering if it came out of a bike that had a radio. Some Speedometers had a White/Green wire from the speedometer to the radio. I believe it was for the reed switch that was used for the automatic volume control of the radio. Just my guess.

 

the description "says" it's for a 91-94 softail... that's it.

 

Not EFI and probably not a factory radio option. If it otherwise looks the same as yours, I'd say it should work.

 

The black wire is ground and the white/green one goes to the turn signal module for the automatic cancelling function.

 

Thanks for the information. should work great then!

 

Thanks THC. I had part of it right. It's the wiring to the speedometer reed switch which is used to raise & lower the volume of the radio according to speed on radio equipped models. I just never even thought about the input from the speedometer to cancel the turn signals.

 

Never having owned one I wouldn't have thought of that reed switch controlling the volume...It's what you're used to I guess.

Just out of curiosity how does the turn signal canceler work on the radio equipped models?

 

See Solution 4.1.1


I copied these sections from the Wiring Diagrams & Electrical Troubleshooting Guide 1991-1992 All Models. From what I can see the REED Switch in the speedometer is used for both the Turn Signal Canceler & the Automatic Volume Control for the Sound System. Both sections mention the White/Green wire from the speedometer.
I guess I thought of the AVC because I'm on my 4th EG and I only owned 1 '99 Fatboy.