North Coast Cab

I installed an aftermarket tach and am getting strange signals. The tach moves up but then bounces around and drops to zero, shoots up etc. The tach is set to 4cyl, power and ground are good. The tach signal is coming from the DME tail, white wire with green tracer.
'86 02 DME

Is there another pick up point? Should I go right to the coil?

pettybird

looks like you need to tap the green (incoming) wire rather than the grn/wt (outgoing) wire:

http://forums.pelicanparts.com/porsc...-location.html

North Coast Cab

Thanks Bro, of course I had it wrong. Cost me a win.....

pettybird

CRAP! Don't tell Ed I helped