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I had hypothesized that Rusty had used the OAT bias supply on P2-21 for the other sensor +5 (do not do this). The OAT sensor red lead should go to one of the +5 volt pins and should be an OK source for the other air temp sensor. This should not have changed the OAT reading. Don't know why it did.

Welcome back Tracy.

I did not use P2-21 for anything other than it's intended purpose. The OAT red wire, and both aux liquid temp voltage dividers are hooked to P2-10, which is labeled "+5 sensor power". I'm not using either of the aux air temp sensors, so I could move the aux liquid temp voltage divider leads to either P2-11 or P2-23 if you think it would be better. If you don't think it will matter, I'd just as soon leave it alone though.

BTW John, I almost did the same thing you did with the power wires. I put wires on every pin, and extended them out of the plug with labels on them (so I'd never have to go in the plug again). I had them all hooked to ground, but (uncharacteristically) realized my mistake before turning on the power.

Cheers,

Rusty (verified the oil hole in my redrive today)