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Forum: General Boating Discussion

03-06-2011, 09:09 PM

Replies: 7

Wiring Diagram for 9 pin Merc engine harness??

Views: 5,304

Posted By Rookie

I believe that wire is for sending voltage to an...

I believe that wire is for sending voltage to an electric fuel pump when starting. That bypasses the low oil pressure switch on the back of the block.

Forum: General Boating Discussion

03-06-2011, 10:50 AM

Replies: 7

Wiring Diagram for 9 pin Merc engine harness??

Views: 5,304

Posted By Rookie

Color codes are all the same for non-EFI engines....

Color codes are all the same for non-EFI engines.
http://www.boatfix.com/merc/Servmanl/18/18E4R2.PDF

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