If I read the Operators Guide correctly, the 12 volt plug in the trunk of my '14 RT has a 5 amp fuse. I was thinking about using it to power my air compressor should I get a flat, the compressor is 12 volt 15 amp. So that tells me this outlet is off limits. Back in the old days we'd simply replace the fuse with a 15 or 20 amp but now a days some or most outlets that use a certain amp fuse use wire rated for the same or slightly more. So placing a 20 amp fuse and plugging in a 15 amp appliance could mean melted wire or worse.

So for others using an air compressor or battery tender what have you done to access 12 volts less going directly to the battery?

Thanks