Originally Posted by gmchx4
IIt's unknown to me why, in a week's time, it won't start after all i have done s mess with electrical systems
I don't know where to start....
Off the top, there is one connection under the dash on the later ones that controls the tach. This is a large red wire off the ignition switch plug and it also controls the power to the ignition module. If you unplugged a stock tach, the engine won't start.
Then there should be two small wires off the fender soleniod in the engine bay on the side of it, maybe one got knocked off?
You need a multimeter and a helper so you can see if the coil is getting power when the engine is cranking over as well as when the key is in run. These are two separate circuits.
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