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I have a 1995 mercruiser Weber 9770s carb 5.7 mag alpha one gen 2 combo with the thunderbolt 5 ignition original engine serial number 0F423587. I had to install a new engine this year because the other one blew the head gasket and ate a gutter between 3-5. I went with a new vortec and i got it...

Yes I've read the sticky, it was very useful I have actually just sat down for the day from work and am trying to find wiring schematics. I understand from what it says at this point it has to be a wiring issue just have to figure out where. It is my understanding that the purple wire travels...

I'm pretty sure you can, if I understand the way the circuit works, the negative side of the ignition coil feeds then ICM. I did some more testing last, night and the way im reading the purple powers the coil, exciter, and the carb choke need to double check that last one but I did a multi...

I have a 1995 mercruiser carb 5.7 alpha one gen 2 combo with the thunderbolt 5 ignition original engine serial number 0F423587. system, that I recently replaced with a vortec reman unit because of a gutter that was created between cylinders 3-5, Before I realized the actual issue with this boat...