Quote Originally Posted by EagleMark View Post
I'm just going through 7727/30 $8D $A1 and a 8708 working on this harness and seems both have 2 fans. Fan 2 seems to always come on with AC, but not fan 1...

The part showing that these signals are 12 volt is very confusing when trying to wire relays! When in fact it is ground that completes the circuit to turn on...
Yep, ground it is. But strangely enough, Fan 1 comes on with A/C request and also in Diag mode with A & B shorted, and can't find that Fan 1 is set on in that area of the code like Fan 2. Just something else to look at when Ihave time.