Recently put a mk3 astra gsi redtop engine into a cavy sri mk 3 8v, nearly everything went fine, running perfectly, but the rev counter is absolutly dead! all other dials working fine, when i was doing the conversion- the wiring was not all that straightforward, a bit of chopping and joining took place, and i am now left with 3 wires with no where to go, a brown, blue and green one. which one is for rev counter and where exactly does it go? and out of interest- what are the other two wires for?!
Also, how easy would it be to wire the astra gsi computer into the cavy interior?.. worth the hassle?