i tore my motor down to freshen the top end..well today i put it back together and have a spare plug that comes out of the front of the harness that has the injector wiring in it. Its a 2 wire plug that has a black and a yellow wire in it. for the life of me I cant find where it goes...! someone help please!

water temp

if thats what it is it must not be used on my boat. I have the type that slides over a single pole sending unit.

its for the ecu.its in the lower part of the intake manifold by the thermostat.or at least thats where its supposed to be.

should have both on the 500 single post for the dash gauge 2 pin weather pac style for the computor.

ok. thanks guys. Ill look there.

It's probably an extra. Snip it off and toss it.

haha right. Yea, I found where it goes. it was hidden under the thermostat housing.

Thanks guys

I know it's too late but it took me a while to find this pic so I posted anyway

Thanks! Perfect pic