I replaced the stock stereo with a kenwood excelon deck. I used a wiring harness adapter so I didn't spice the truck wiring harness. The deck and amps for speakers and amp for sub work like they are supposed to, key on/off and such. illumination fuse popped, I replaced the 5a fuse and haven't had any problems since.

Heated seats, mirrors and air worked perfect before the install (air at all levels and both seats/mirrors no problem). now the air doesn't work at any of the 4 levels or any of the settings, the heated seat indicator lights don't light up or flash for either seat or either level and the heated mirrors on both sides don't work and the illumination doesn't register being on.

Is there any correlation between the wiring of any combination of these? or am i just an unlucky sob with three seperate relays going out? Did i remove a common ground?

Update: went to check ground for stereo and some other wiring to see if common ground and heated mirrors and the air blower works. Did nothing but take the deck out of the sleeve and ohm the ground

 

Check:
Fuse 1 in the junction block.
Fuse 2 in the junction block.

Looks like the a/c control head, and the seat heat switches both draw power thru fuse 2. Check that one first.

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