I have an 05 Taurus. After repeated attempts I can not find a location to fish a 12 gauge power cable from the battery through the firewall to supply a vhf transceiver. Has anyone had the same problem ?
What I have done is to locate a rubber grommet feeding wires through the firewall, punch a hole in the grommet and force the wire through. The grommet will seal around the wire. Worked for me .... good luck.