Hi, which wire do i need in the engine room to connect to my aftermarkter rpm gauge (rev counter) ??? (the gauge needs a negative input)

It is a Ford Fiesta 1.6 turbo from 1991 ... thanks in advance!!!

Cheers

 

i think its the bottom green wire on the connecor which plugs on to the coil but im not 100% sure.if u do find out and get it going then let me know please cheers

 

i tried both of the green wires, but they both give a half signal so my rev counter shows the wrong rpm

 

well i dunno then sorry mate sounds odd 2 me.safechav seems 2 know a bit about electrics it might be worth asking him