1981 Yamaha XJ 650 wiring diagram

hope this helps,,follow the link,,,,,,,http://web.archive.org/web/20040215032603/http://members.tripod.com/dave_jack/id49.htm

i belive it is a straight swap, but there are some points to watch for, here is a discussion on just that...

http://xjbikes.com/Forums/viewtopic/p=22001.html

Hi and welcome to FixYa,

The post is under an 81 Yamaha XJ650 and the need is for the wiring diagram (of the ignition module). Should you be interested, here is the wiring diagram of the entire bike.

Good luck and thank you for asking FixYa.

visit this site www.xjbikes.com

there is not much difference between those 2 engines. they are the same cc and both are in-line 4 cylinders.

without a manual can you set-up the timing mark on flywheel
an see what cyl is compression stroke to find #1 cly

coil 1 are spark wires 1 and 4 cyl

coil 2 are spark wires 2 and 3 cyl

now if still have trouble then (if same plug connection) switch the around inlet plug on coils form bike wire harness or swap spark wires