A rat has gotten into my van. It chewed its way in through the wiring harness that comes through the passenger side firewall. I’ve gotten those wires repaired thankfully. Now I’m left with two issues. The important one is the ac front blower is showing a short to ground or open circuit. The relay and fuse are both fine and working. I’ve traced the wires as best I can but I need to get to the ones that run under the dash up by the windshield. I think my only option is to pull the dash. Does anyone have any instructions on how to do this?