On a related issue, though, I don't plan to use the lighter but will hook up a GPS or charge my phone. 20 amps seems high for those purposes. Any suggestions?
Thanks.
Check out an owners manual from a modern vehicle with a power point and see what size the fuse is.
If I were you I would make sure the "lighter" I used was just a false front for looks..... and disarm it so it could not possibly fire up.
