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- #16
So after balancing my options I decided on going through a grommet instead of drilling a new hole for adding wires through the firewall. I ended up using the grommet directly behind the battery.
Careful to avoid hitting other wires I punctured the grommet using an aluminum arrow shaft sharpened like a fountain pen. It went through the grommet fairly easily and I then ran a cord through the hollow arrow shaft for pulling wires through. I used dielectric grease to help slide the wires through but dish soap works well too.. So far I've managed to run a pair of 10 gauge wires for a ham radio, a 1/4 inch cable for a 6 gang switch and a couple of smaller gauge wire. I bundled the wires with a split wire sheath and sealed the hole in the grommet with automotive RTV sealant.
So far so good. No smoke, flames or error codes.
The 6 gang switch and relay setup I installed will let me add exterior lighting/accessories in the future without having to go through the firewall again. Everything can be routed to the fused relay box mounted in the engine compartment and switched by the controller on the dash.
Careful to avoid hitting other wires I punctured the grommet using an aluminum arrow shaft sharpened like a fountain pen. It went through the grommet fairly easily and I then ran a cord through the hollow arrow shaft for pulling wires through. I used dielectric grease to help slide the wires through but dish soap works well too.. So far I've managed to run a pair of 10 gauge wires for a ham radio, a 1/4 inch cable for a 6 gang switch and a couple of smaller gauge wire. I bundled the wires with a split wire sheath and sealed the hole in the grommet with automotive RTV sealant.
So far so good. No smoke, flames or error codes.
The 6 gang switch and relay setup I installed will let me add exterior lighting/accessories in the future without having to go through the firewall again. Everything can be routed to the fused relay box mounted in the engine compartment and switched by the controller on the dash.
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