Evinrude Blue wiring harness plug verse Red wiring harness plug

boatinglawyer

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Jun 29, 2013
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I have a 1993 35 Hp with a Red harness plug. I am swapping that motor with a 1978 Evinrude 55 HP but the plug is Blue. All the wiring connections seem the same except the Blue plug has a Brown wire instead of a Tan (with or without stripe) going to the temperature switch and the Red hot to battery seems to be off more to the left than the Red plug. Other than that it all seems exactly the same. I believe I an move the Red wire over on the Blue plug.

Does anyone know what is the difference in the two, if they can be interchanged, etc.? I have never seen a Blue plug, any input on this?
 
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