Trigger Wiring for Chevy V8

[nimrod_pro]

I have a Distributor setup with a GM HEI 8 Pin igniter The igniter controls dwell and puts out a square wave on pin tach out. Ground - System ground or signal ground? Tach Out - to trigger1? Ignition - ignition 1? Crank Override - Connected to +5v How should i wire Trigger1 and Trigger2 ? My old injectionsystem managed to only use the Tach Out to trigger fuel and ignition without any sync signal. the VR wheel in the distributor has 8 teeths.

[Dtech Motorsport]

you do not need to use trig 2 on this application

trig 2 is only for sequential or wasted spak applications and is not needed for group fire and distributor applications

wire it as you have described and set to either one tooth per tdc or use multi teeth mode with 8 teeth selected

Regards

Dave

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