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This should cover your engine. Compare with the components on your engine. Let me know how you do or any problems.
What do you mean, the coil is on the wiring diagram?
Not sure whaqt you are asking. You needed to know what wire went where, correct?
Is the wire a tan, tan w/ blue stripe or a dark brown w/ white stripe? If a solid brown and you have the optional Mercathode system then it goes to that.
You have the MPI, fuel injected engine correct? Do you have the digital throttle? Do you have the Mercathode anti-corrosion system?
Purple is the hot wire to the + positive side of the coil. The gray is the tach wire to the - side. The brown and orange do not run to the coil they go to a Mercathode system. Look on the transom and see if there is a devise with 4 wire terminals.
Do you have the wires from the distributor to the coil connected?
How about taking a picture of the wiring and post it here.
Black is ground. There are numerous ones on the engine.
Do you have the ignition module on the side of the dist.? Your serial number does not come up as a good number can you recheck the engine serial number?
OK I believe you have the Thunderbold IV with the ignition module on the riser. White/red goes from dist to module. Yours may be faded.
Black to ground.
White/green dist to module.
Gray from module to - on coil
Gray from harness to - on coil
Purple from module to + on coil
Orange should go to Mercathode
Brown should go to Mercathode
The black may go to one of the small terminals on the starter solenoid, still a ground. None of my drawings show a black to the coil.
A ground can't go to the coil. When the key is on you have power to the + side. The gray wire from the ignition triggers the coil through the - terminal. A ground would destroy the coil. ALL BLACK WIRES ARE GROUNDS.