The Rear Blower is different from the front, it is smaller and should be different in color. My rear blower started coming on intermittently and would lose connection randomly (2010 Expedition EL), I would hit a couple of times and it would be back to normal again.
After a while, I ended up removing the blower and blowing it out with compressed air, as well as popping open the back cover and using air to clean out the copper inside there. I haven't had a problem with it since, and I cleaned it in July 2022.
- Joseph