<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by fourfourto:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Just wire in the coil side of the relay to the dome lamp </div></BLOCKQUOTE>
Were is the dome light wire.
At the dome lamp.
I would tap into one of the orange wires going to the footwell courtesy lamps. Checking the wiring diagrams, and on the H3, the rundown protection is not controlled through a relay as in other vehicles (I keep forgetting the H3 is one of the vehicles using the newer style BCMs.)
The BCM actually supplies the power directly to the courtesy lamps versus power a relay as in other systems. This reinforces a relay should be used.
In this system, not only does the BCM supply the direct voltage for the lights, it also supplies the ground switch to turn each one on depending on switch input. Therefore, I highly suggest a low resistance relay. If you wired the cooler right into the circuit, the BCM might sense the extra current flow and pop a code, thinking there is a short to power in the lines.
So, I would recommend splicing off one of the green wires from either footwell courtesy lamp, attaching this to the coil side of the relay to power up the relay.
Then for the switch side of the relay, tap into one of the orange wires going to an accessory plug. (If it was me, right where I splice into the accessory wire, I would also install a 10 amp fuse, this is just a safety feature I like to do when tapping into wires. If a fuse is installed, install the fuse as close to its power supply as possible-in this case the orange wire at the accessory plug.)
Then run a wire from the relay to under the seat, and you can also get a ground under the seat too.
This is small fridge its also a warmer.
On fridge is listed Nominal current draw 3.6 amps fuse rating 10 amp.
How can I tell if dome circuit can handle the load?
Any aftermarket auto shutoff options?
Yes, they do sell electronic timer relays.
I was thinking of putting a 12 volt socket under seat instead of hard wiring it.Rather tap right in but if I need a relay Ill put one in.I have one installed for my airhorn.
I could just plug it in but I dont like the looks and trouble with unpluging all the time. </div></BLOCKQUOTE>