Trailer battery charge AWG wire size>

[genestoy]

Most all trailer "pigtails" are 10-12-14 AWG wires which is what I go by, if you are that curious about the MM size look it up yourself! You can also look at the diagram Fless posted above and it also states AWG wire sizes.

 

[Sparksalot]

Thanks for the update. My Tahoe does not have that much exposed wire, so I couldn't get a definite answer.

But I'm curious how you decided it's 12 AWG, since GM has been using metric wire sizes for decades....????

The upfitter guides all use AWG.