[67ChevyRedneck]

I should probably finish this huh?

Hmmm, what the heck was next?


Here's what your firewall will look like with the underdash unit installed in the cab and the firewall cover on.

Again, I'd like to stress that this may be easier to install with the cover off BUT don't forget to at least run the lines through the firewall cover and the cover that covers the firewall cover! If you don't you'll be cutting the cover or unhooking lines and putting them on again!

Originally Posted by 67ChevyRedneck

I forgot to take a picture of it, but you need to drill out the hole for the drain vent in the cab. You can see the 5/8" hole near the bottom center of the firewall cover, that's where it goes and where it needs to be drilled out.

It's difficult to drill from the inside of the engine bay with the inner fender in the way, so I used my dremel to drill out at pilot hole in the center, then from inside the cab, I was able to drill out the 5/8" hole. Make sure you center your first hole well, or you'll be drilling through the plastic cover....

*Note: You could put the cover on, mark the 5/8" vent hole, remove the cover, THEN drill it out so you don't mess up the plastic. Then you can install the cover with all the sealant as shown above.

Sorry, no pics on this one.

In this pic you can clearly see the drain hole that needs to be drilled near the bottom center of the cab. This is where the water will drain out of the cab.