This relay was just removed from my 260E...I would LIKE to put it on my 300TE.

300TE stock: Currently the A/C aux fan does NOT turn on at low pressures, only medium to high pressures...

260E /w this relay: Aux fans kick on medium immediately when A/C is on.
I believe this was done by dealership...there is an MB sticker on radiator support (writing rubbed off), showing R134a retrofit (although I BACK-converted it to R12)...but nonetheless, I did not put this relay in myself and this isn't something that came from the factory, so SOMEONE put it in...

Since I drive the 300TE daily, I want to get this swapped over so it will be better for cooling for both myself and the engine.

I am stuck though because the two A/C systems are different...there is an extra wire on my 260E that I cannot see on the 300TE:
NOTE: the blue wire on the 260E comes from the A/C compressor harness, but the wire does not exist on the 300TE

Photos:









Looked up the above relay, and amazon states:
BOSCH STARTER RELAY 80-92 0-332-019150

I hope the above photo's make sense...because I don't have a clue what that blue wire is...its missing from my 300TE...I thought maybe its a wire that came off the main harness that goes into the A/C compressor, but nope, both cars have 3 wires going in, so what's that wire? What could it be for?

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