Tom from Keller Tx here. I just finished hanging a 93 Ultra sidecar on my 80 FLT Shovelhead this summer. Can anyone help me with a wiring diagram for the interconnect cable 88403-93? This is the cable for the radio and intercom, not for the running lights and turn signals. It goes between the amp (mounted behind the seat), and the bike. The 93 sidecar owners manual only shows a block diagram; I need a more detailed schematic; something that shows something like...the green wire is radio volume up, the blue wire is intercom PTT, the brown wire is Mode Select...etc. I've got a newer Harley radio with handlebar controls on the bike, thought it was time now to get the radio in the hack working.
Posted 10/26/2015 9:27 PM (#86646 - in reply to #86616) Subject: Re: Harley wire diagram
Location: Rochester, Michigan
I couldn't find a wiring diagram but there is a series of sidecar audio troubleshooting flow charts in the service manual I have for my 1993 Tour Glide. It does call out some of the wire colors to check voltages, there are about ten pages of charts. There may be an online version. The service manual I have is 99483-94A.