Cigarr lighter getting hot in an 07 Freightliner Columbia

Ridgeline · Jan 19, 2025

86scotty said: ↑

Amazon or anywhere Google takes you. I'm a BlueSea fan but you can find cheaper options that work just as well, especially for a simple fridge connection. Just hardwire it to constant 12v power. Should be easy enough to find a source in your truck.

A likely source is right behind the cigarette lighter socket that is getting hot. That is the bottleneck as Goodysnap said. Wire fridge directly from the wires behind the socket and make sure you have the right fuse in the fusebox for that socket (probably 15a).

Your fridge should have an additional fuse on the side of it, make sure that is correct amperage as well.
Click to expand...

Yeah but some of those on Amazon are not made for higher current, I had one here that is just a lighter extension and it was a 5 amp socket, the Blue Sea is rated at 15, the matching plug needs to be used for it because it locks into the socket.

SO look for something that can take 15 amps, that is the key.

86scotty · Jan 20, 2025

Correct, you definitely have to do your homework on Amazon electronics. Thanks for clarifying because it sounds like the OP is not keen on this stuff.

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