12v power in bed

[Kmehr]

Wanted to pick yall's brains a little for an idea I have. I run my truck on veg oil and when I go to collect it I use a 12v transfer pump with battery cable leads to power it. problem is, these battery cable leads are way too short to reach from the bed of my truck (where all the work is going on) and the battery. It would be really sweet to have a 12v power source, like a battery post, close to the cab in my bed. Any ideas?

[DmaxMaverick]

Install a stationary jumper cable disconnect (like most tow trucks have). Instead of having the alligator clamps on the ends, install a switch/fuse box (if necessary) and connector for your pump. The connector can be mounted anywhere. The kits are usually pretty generous with cable length. JC Whitney may still carry them, but you can get them at many auto/truck parts stores. Maybe a Harbor Freight item.

Also, depending on the amount of current needed (effective up to about 20 amps, more if heavier wire is installed), you could plug into the trailer connector (it should already be wired for a 12V trailer charging circuit). I use this method for flying model airplanes (supplies/charges power box used for fuel pump, glow plugs and electric starter, and TX/RX battery charging). It's just an RV trailer plug wired to batt+ and ground.

[a5150nut]

If your using larger cables, you can use plug type connectors for welding leads. Would be a good idea to fuse the hot side some where ahead of the plug. Mount the female plug end some where convenient.

[Kmehr]

THanks guys this is great, I am going to northern tool and see what I can round up.

[JohnC]

Put a fusible link right at the power source (battery?) Big wires make big fires...