You should listen to me. No, seriously, listen to me.
Join Date: Oct 2008
Location: Santa Barbara
Motorcycle: Blue 2006 GSX-R1000
Re: sidecar harness
There are wiring diagrams at the back of the K1/K2 service manual. However the K1 E3 and E24 diagrams are flawed in that a 1/2" (or whatever) vertical section is missing that involves the wiring to the front harness connector and to the left handlebar switch. I've fixed them but want someone to proof them before generally releasing them. This is more than a quick "look's OK" but instead confirming that the corrected diagram agrees with the actual harness in the affected areas. Download the manual with the flawed diagrams. If, after reviewing them, you're willing to proof one or more corrected diagrams, send me a PM with what version you have.
The sidestand switch is commonly just jumpered but the wiring diagram shows a diode in the switch to only allow a short in one direction. I use a 1N4006 for that purpose but I think that anything from a 1N4003 up should be OK.