Wiring diagram for a 1990 FXR harley davidson

Duplicate question already answered

I had same issue 94 for an it fried ignition module. Turn signal cancelater an all headliges an voltage regulator. Come ta find out stater plug was loose overchargeing battery then frying everything twice. So got expensive

The Harley FXR Super Glide Also known as FXRS turned in to the Dyna Lowrider, Either way the proper term Is FXRS. Non the less, Harley service manuals during that time was not year by year like it is today. Here is an example of the exact manual you will need.

http://www.latus-harley-davidson.com/Harley-Davidson-Service-Manual-for-1984-1990-Touring-FXR-Models.htm

You can maybe look on ebay or craigs list, though it may be more rare than we think.

Hope this helps.

Doc