Originally Posted by telemaster1952
i just drilled a hole in the firewall.
That is what I did as well. The hole is in the drivers side. You just have to be careful where you locate the hole. I used a bi-metal hole saw. I put in a rubber grommet and used wire loom inside of the grommet hole. I also used some 3M duct seal putty so there would be no way to get water inside of the cab. It keeps out the outside air also.