wog

I just Bought A Auto-Meter RPM Monster Tacho and im having problems putting it in as i know it needs to be connceted to the Ignition coils But in my rx7 series 2 i have twin coils and i don't know what to hook it to do i hook it to both or just one and also on the in structions it tells you that for a 8 cylinder don't cut any loops on the back for a 6 cylinder cut 1 and for a 4 cylinder cut 2 but it doesn't say for a rotory so please if anyone has installed one before please give me an idea of what to do

thanks a heap

wog

Xavier8

Search!!!!!
4-cylinder firing pulse for a rotary, connect to the trailing coil negative side, give ignition power and ground to the tach. Works. I am using a pro-comp tach on my 12a. I had to find out all this stuff, and used the search function alot. Try it!

rototiller1

you can use either one, will make no difference

Jeff20B

iTrader: (13)

Hook it to trailing so you'll know if the trailing ignitor or coil ever goes out on you. I doubt you'd feel the power loss, since trailing doesn't really add much.

rototiller1

If your not disconnecting the stock tach, it makes no difference

Jeff20B

iTrader: (13)

True.