I am so excited to finally have my first HHR. It's a 2011 that started life as a full panel. The previous owner installed the backseat and doors with windows. He told me that one of the doors is off of a 2011 but the other one is off of a 2009. Current issues are the power windows do not work on the back doors and the 2009 door lock does not work. The previous owner said that the pins in the 2009 wiring harness do not match the 2011. Any advice will be appreciated.

 

The only guess I can come up with is first try just matching wire colors. If that doesn't work take pictures that I can see clearly and I can try to match them. Which connectors are in question?

Since it was a panel it would not have factory body side wiring harness. Who knows what was done to make them work? The panel would not have window switches, locks or latches

 

That's a fact.

PS: Welcome