I bought the car with working heat and a/c controls. I don’t have the old ecc unit because it was thrown away. It was noticeably blown and shorted out to me and I’m not an electrician. I did replace the clutch and had to unplug lots of wires and drop the engine about half a foot so that may have cau...

Yes the heat works if I plug in the power to the unit into the blower motor. Just those lights don’t turn on and there is no power coming from the red and blue wire to the blower motor. Would it be a problem with the MOFSET? Just those two lights don’t turn on.

I checked and the sticker on it says 9166550 W627K. The unit did also come with its own harness plugs. I don’t think those would do anything switching them out. I did order this part off eBay from someone with good reviews. There are returns available as well. It says it was tested. Not sure what to...

Do you know how I would check to see which specific one I need?

I’m struggling finding a problem with my ecc. I have a 1996 Volvo 850 and the terminals were hooked up backwards when jumping the car. The ecc unit blew and I thought the blower resistor did too. I first bought the ecc unit and plugged it into. The new one the lights turned on except the REC and AC ...

I’m having the same problem. I took the relay out and replaced with new and didn’t fix the problem. Also took the resistor out or what the thing is next to the relay and it didn’t seem burnt. Problem arose when the car was jumped and the terminals were hooked up backwards. I replaced the ecc unit an...