Out the grommet in the spare tire well by the battery?

 

is there one there? If so, cool. That should work. Thanks

 

Hmm. I guess post #6 saying there are "several back there" .....was ignored.

I'm out.

 

Sorry, missed that one. Thanks for your imput

 

Is the HHR the toad or the towing? I don't know why you would need to run wires all over the place. The tail light wiring is easily accessible either in the rear or at the BCM. And, as I pointed out earlier there are wireless options that cost less than wire; might need to add a layer of tin foil to your hat.

 

I will be towing the HHR behind Motorhomes.

 

Why do you want to run wires to the tail lights? All of the wires are available at the BCM. And the wireless options.

 

Wireless kits are expensive!

 

If you consider $50 expensive.
https://www.ebay.com/itm/17483501853...8AAOSwHF5g1mll

 

Donbrew , I’m up here in Canada , cheapest one I found.

https://www.princessauto.com/led-wir...t/PA0008814964