How do i run a wire from the engine compartment throu the firewall into the passenger compartment on a 94 geo metro...thanks
There should be a number of holes in the firewall already that has wire or cable going through already. If one one of those is in a convenient spot, just enlarge or cut another hole in the rubber grommet for your wire. If there isn't one existing in a good spot, drill another hole making sure it will be in a good spot on the other side of the firewall. Install a rubber grommet in the hole to protect the wire from the sharp edge.
What exactly are you trying to accomplish?