Look for an exhisting hole that you can piggy back on. If there is no hole, then you will have to drill one. Be sure and use extreme caution and do not drill into something or another wire. After drilling the hole, be sure and install a rubber grommet around the wire to prevent the wire from shorting out on the sharp metal, and to seal the hole.
You'll need to locate a suitable location in the firewall to drill a hole through large enough for the cables to fit through. Drill the hole. Install a rubber grommet around the hole to protect the cables from being cut by the metal. Then you run the cables through. you may want to use rtv sealant to make sure the firewall seals off the engine compartment from the cab.
The lower right side of the firewall. There is a wire harness grommet already there it's tight but I got a 0 gauge wire through by greasing the wire first.
There should be a location where you can go through the firewall where other wires are already there. Piggy back on that hole. If not then just drill a hole through the firewall, being very careful not to drill into any wiring or components. Insert a rubber grommet in the hole to protect the wire, and then the wire.
Straight to the battery through your firewall straight to the battery to the to the positive post
Run the wire under the car and come up under a seat (front or rear) or where it's convenient.
Yes
Most people would drill a hole.
As with most vehicles, the passanger side firewall presents the most viable location to run accessory wiring through. Using a step bit drill in the desired location. To find a desirable location look on both sides of the firewall, engine and passanger compartment to determine the best route. Once the hole is drilled install a rubber gromet, place plastic wire loom around the desired wires to be pass and run them through your rubber gromet.
check for rubber grommets in the firewall that already have something protruding through them if not then you'll have to drill a hole.do not run an electrical wire through bare metal hole because it can cause a short.get some grommets to put in the hole first then run your wire
The separation between the engine compartment, and you, is called the firewall. The Steering shaft, from your steering wheel runs through the firewall, the heater hoses run through the firewall, the power brake vacuum unit is connected to the firewall, your ignition wires etc run through the firewall.
If you cant find an openening large enough then you can always drill a hole and place a grommet in the hole and then run the wire through the grommet. Hope this helps.
Find a spot near other wires or cable and inspect both sides to make sure you will not hit anything while drilling. Drill a small hole in the firewall in that area. Wrap the wire with electrical tape or use a grommet to keep the wire from chaffing.