No spark and i can only get 5V at the coil.

On a side, one of the exchanges above:

Tyler says

That's why when the run side of the ballast fails, since it does all the work, the engine starts as long as the key is in START and sending that full 12v to the coil.

And the OP answers

When I measured the voltage from the terminal and used a screwdriver to jumper the starter relay there was no difference in the voltage at the coil + terminal, so it never switched to the 12V full power voltage that your referring to. Now that i think about it i may be wrong in doing so and actually need someone to turn the key while checking for the switchover in voltage because im not sure if it would actually send the 12v to the coil without the key being physically turned. I haven't dug that deep yet.


If I understand what you did, there, you have to understand something very important about these cars. Jumpering the starter relay is NEVER going to get the 12V bypass to the coil +, because this happens in the ignition switch. Only time this happens is holding the switch to start.