I did a search and was unable to see any real installs for this. Not that it is complicated at all i just was wondering, in what area did people drill through the firewall to route the switch? I havent a clue where. To the people who have done it or know of it being done, where is the most convenient/effective area to route the switch through the firewall? Any little "tricks" to make it easier or things not to do? If this is in wrong section i apologize, seeing as is a fan switch it could fall into Lt1 or audio/electrical so....

 

The best place to route wires is already drilled and grommeted for you. Behind the PCM, passenger side, is a large grommet that is fairly easily accessible from under the glove box. Go at it!

 

Well shi*, that takes care of that! LOL...thanks fella

 

Some info on routing wire through the firewall.

 

RamAir was spot on. Installed it 10 min after seeing his post and it was a piece of cake. Routed it through the grommet, under the dash and mounted the switch right underneath the lighter. It was like Chevy left a nice, square space right there for that exact purpose Thanks!