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Old 05-13-2009, 06:45 PM   #4
Rich Biebel
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Smile Re: MSD Crank Trigger w/ Accel DFI 7 on LT1

Jason......I spent some time looking at the Accel info on their website to refresh my memory. I am almost positive you need to send the tach output signal from the MSD box to pin D on the ignition connector. It is an 8 pin weatherpak and D is crank positive. Tach output is a 5 volt squarewave on the MSD. You also might need to reconfigure your ECU's ignition info for that crank trigger signal. You have to look at the installation guide for various ignition signals for that, I can verify the wiring pretty easily as my old car is raced locally a lot by the present owner but I am pretty sure I am correct. My car would not start when I first attempted to fire it and it was exactly the trouble your having. Splice a wire from your tach wire ( green) to that pin D on the ignition connector. You will need to immediately check your timing when it starts. You won't have anymore ignition problems with the trigger on there. You do need to have a good cap and the rotor is another trouble spot to keep an eye on from what I've heard. I had the MSD cap and rotor and it has been on that car since day one with no problems and probably 100 runs on it.......Rich
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Rich Biebel
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