2000 mercury 200hp EFI melted wires

[kls2020]

Or you could just look around the top of this thread where the purpose of each of the burnt wires in your picture are identified .

[JOE54]

^^^^^^ sho could

[fisherman34]

Or you could just look around the top of this thread where the purpose of each of the burnt wires in your picture are identified .

[fisherman34]

This is what I have come up with for the "Pin Out" of my ECU plug in connector between the engine harness and ECU showing all inputs and outputs for a 97 200 EFI . The 16 chevrons around the perimeter of the indicate the ECU connector plug pin number , respective wire colors in the harness , and what they connect to . My knock sensor is disconnected and not used so it is recommended to take this input to engine ground from what I have read . I should have shown the yellow/red wire on pin 11 and purple wire on pin 7 are both battery positives on those ECU inputs .Hope this helps - Ken Attachment 359068

Thank you. Very helpful

[fisherman34]

UPDATE ! It has been awhile, but i replaced the wiring harness on the engine ,sent the ECU in to Simon Tech. to get repaired and so far my engine is running like it did when she was new! I guess the melted wires were caused from me continuously turning it over to get it to fire. Before the fix the engine had a mind of its own. It would run good for a little while then it wouldn't restart for an hour or more. I should have sent the ECU out along time ago. Thanks for all the ideas from everyone who responded!

[lpugh]

fisherman34 Thanks for the follow up, really helps all of us to know what the confirmed fix is, very much appreciated

[EuropeanAM]