Wiring Harness Troubles

railker

Registered User
Alright, here's our trouble. Got a manual 1990 SC with a blown engine, and got a donor engine from a manual 1991 SC. Most everything fits together the same, but we've come across one connection (so far) that's stumped us. A lot of the wiring is the same, but it's a 8-terminal plug to a 9-terminal plug ... but the extra wire in the 9-terminal is the same color as another -- Red with a green stripe, which seems to be a 'hot' wire for a number of systems.

The other mystery wire is a white/purple which we might guess is a ground and wire to the black on the other side. Most of the other wires are the same color both ends, so logic says to connect them, it's the odd ducklings throwing us off at the moment.

Of course, want to see if anyone KNOWS the answers off by heart, as fun as experimenting with wiring is. Help us identify?

Pics attached
 

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91 harness on the engine. We made a mistake and threw away the 90 harness with a bunch if the old gaskets and junk
 
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