Tex wrote:In the passenger side rear wheel arch I removed 3 screws and 2 plastic screws and bent the plastic back out of the way. When you look up behind the plastic you can see the back of the fuel filler.
Inside the tub at the front passenger side (roughly where the orange strap attaches to the side in the pic below) if you feel up underneath the lip you will feel an opening. I curved a piece of thin wire and fed it in and downwards through this opening about 300mm. Then looking up under the wheel arch I could see the wire above the fuel filler hoses. Pulled it out taped the +ve and -ve cables in protective conduit to it and pulled it into the tub. EASY.
I had a sticky beak in a similar area on the drivers side and found that there is a cavity that runs all the way through the corner of the tub, indicated by the cable tie below...
And here is where it goes through to the tub...
So to find this cavity, feed a long cable tie from one of the inside corners at the front of the tub and poke around until it comes out. The cavity is tight but I have managed to poke two runs of reasonably juicy power cable through. They then run down between the tub and the cab to a chassis rail, then run a short distance to an unused rubber bung near the rear doors. There is one of these on either side of an MN...
From underneath the car. I'm no expert on sealant but obviously, it has to be done top and bottom. Something tells me that white stuff the factory uses is the way to go...
Once those cables re-enter the cab, they go to the bus bars I have mounted on a backplane behind the back seat...
It's not pretty but both the outgoing runs of power to the tub are fused at the bus bars and the main incoming feed from the battery under the bonnet has a 70amp circuit breaker right at the battery up front. If you are only going to run one circuit breaker, put it right at the battery. A short can occur anywhere and if one occurs between your breaker and the battery and the breaker is down the back of the car, then all that cable can go up in flames setting your whole truck alight. Better to keep an explosion forward of the firewall and under the bonnet...