Hs anyone got a diagram to interface the megajolt v4 to the sierra tacho ? I have tried connecting it but get nothing.

There are 3 possible connections, 1 direct from the megajolt, 2 from the EDIS and 3 from the coil pack using Zener diodes, all the wiring diagrams are available on the Autosportslabs web site.

I did the coilpack with diodes thing and although it was accurate upto about 4.5k it did seem to wander slightly, for example it would be reading 5.5 but was actually 6k

Cheers

Rich

The best option then would be to run the Sierra Tacho off the Ford EDIS, should work.

Didnt for me, tried, rev, pip and ended up on coil.

1 of them should work though!

Cheers

R