Wiring In-Bed Truck Camper Running Lights and 12 Volt Circuit to 2012 Toyota Tacoma

Question

Question:

Hi, I have a 2012 Tacoma 4x4 with an aftermarket 4 wire flat trailer plug wiring installed. I recently purchased a Truck camper that has a 7 pin flat blade connector. The Camper will only use/need Marker lights, ground and 12 v accessory power. the Camper is older and has 120v AC Input shore power cord, a 12v Battery and a low power inverter. Since the camper is older and I only trust the wiring a little - Im planning on wiring up as follows. The Intent here is protect the Vehicle from any power feedback from the Camper. I am planning To wire it as follows Plug to existing 4 wire trailer pigtail. Attach Ground wire to Vehicle chassis, Trailer Marker light wiring will be connect by the 4 wire connector correct? 12v Power wire add in a Diode i.e. 50A @12v = 600W with, say, a 100v+ PIV and also a 20a Fuse/braker to connect to Vehicle 12V power. Remaining wires to be taped. I believe The Above will isolate the Vehicle from the Trailer power but still allow the Vehicle to power the Camper 12V and charge the camper battery if I have it in circuit Camper battery isolation switch closed.?? Also, Would it be best to tap to my vehicle 12v power at the Vehicle fuse box rather than the battery ? Thanks - you Guy are Great !!

asked by: SteveC

0

Expert Reply:

Tapping into the vehicle's 4-Way trailer connector for running lights will work great. It is the pin next to the ground pin, usually a brown wire. The aftermarket 4-Ways for the 2012 Toyota Tacoma are all going to be circuit protected so you would not have to worry about that circuit causing any trouble with the vehicle wiring.

You would not have to use diodes for the 12 volt circuit. What I recommend is 10 gauge wire, # 10-1-1 sold by the foot, and a circuit breaker such as # PK54520 for 20 amp, # PK54530 for 30 amps, or # PK54540 for 40 amps.

Using a battery isolation solenoid # PK5231201 will work to shut off 12 volt power to the camper once the vehicle is turned off. The circuit breaker can go on the input or output side but I would put it on the output side of the solenoid (that goes to the camper from the battery) because the solenoid is rated for 80 amps. Putting the breaker before the solenoid would allow the breaker to trip before it got to the solenoid or the battery.

Connecting to the battery is ideal. You can use the fuse panel to tap into a circuit that only has power when the vehicle key is on when installing the solenoid.

expert reply by: Michael H

0

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