Here is one for a 2007:
21992589 | eBay

All of the switches just snap in.

Does your car already have the harnesses? The switch seems to have changed in 2008, I don't know about the wiring.

 

Fog Light Switch ACDelco GM Original Equipment 15933137 fits 08-11 Chevrolet HHR | eBay

Is for 08 and up, this Rockauto link shows the correct 2007 switch

More Information for STANDARD MOTOR PRODUCTS FLA1059


GM shows it's obsolete

http://www.gmpartsdirect.com/oe-gm/21992589

 

Yes, they did change I don't know the difference. Looks to be a different shape, I don't see a difference electronically.

All of the switches just snap in.

Chevrolet GM OEM 06-07 HHR-Fog Lamp Switch 21992589 | eBay

Here is the wiring for 2007

 

If the only difference is the shape, it might be cheaper to get a new waterfall from a 2008+.

 

Thanks guys. I did get the 07 schematic from Mitchell pro on demand, I was going to compare the 08 but you already confirmed electrically they are the same. I had thought about getting a newer waterfall and just going that route.

I searched eBay too and didn't find a switch, but you did, man you guys are good.

 

anyone have an idea on how to remove the blank switch for fog lights on an 06? Does it pry off? Accessible from up top by removing the storage bin? I have an idea of using that space to make a mounting spot for my phone but I need to get that blank out of the way first!

 

I thought that you just pull the waterfall off and access from the back?

 

Probably. I just didn't want to go digging around if I didn't have to. I also figured you might be able to be sneaky and go in from up top.

 

Nope you need to pull the waterfall

 

Yes, pull the waterfall and access from the back.