PDA

View Full Version : RS250 tacho wiring



GSVR
11th June 2006, 11:31
I've got this tacho off a 1989 Honda RS250 and want to know what the wiring is so I can hook it up to my SV650.

Black must be earth but what colour is the signal wire? I'm picking blue but want to be sure.

Can I drive it straight off the ignition coil via a resistor or just a wire. How does Honda do it on this bike.

Thanks in advance. Had a bit of a look on the net for info but have other stuff to do than search all day.

Thanks in advance.

svs
11th June 2006, 12:43
there's an 89 rs250 manual here (http://www.rscycles.com/images/PDF/parts%ADbooks/89rs250.pdf)

The wiring diagram might help. Looks like green is 0V, but there's lots of other iinformation in there which might be useful

GSVR
11th June 2006, 13:41
Cool thanks Phil thats just what I was looking for.

Got it running. Blue is Signal , Black is +12v and Green is Ground.

Glad I got the wiring diagram or I might have fried it.