I have a ham radio that I am wanting to install in my 92 Previa. I need to run 2 14 gauge wires from inside the van and connect to the battery. What is the best way to get the wires through the firewall? Most other vehicles usually have extra room to run the wires along side other wires already going through the firewall. However, the Previa has everything so encased, tight, and close together, I don't see how to do that. I'd rather not have to drill another hole through the firewall. Any ideas?