Hello,

I am in the process of replacing my AC receiver/ dryer along with both the switches that sit on top of it. The new red pigtail switch (URO brand) that I purchased has both black wires. I am not sure which wire is + or negative on the new switch. My old one had a grey and grey/blue wire on it. Does is it matter which one connects to which ???? Please advise. Thanks

smk_texas
03 ml500
98 s420
95 e300d

That sw is aux fan and is a series circuit to ground, so either way works.

__________________
A Dalton

Thanks Arthur.

You're Welcome............

__________________
A Dalton