The actual wire gauge running up to the aux lighter adapter is the same on both generations, they just dropped the fuse rating down to prevent people from using the receptacle for constant use at 10 amps... you can stick a 10a fuse in there for emergency short term usage, like a pump, but test it before you need it, as it may still pop, pumps vary on current draw.
I have a simple lighter socket unit, with fast on 1/4" blade connectors, that I plug into my onboard aux fuseblock under the seat... that block is directly wired to my batt, and has a 35a rating, and inline fuse, the circuit on the block I plug into has a 15a fuse, it works fine... I have 6 usable circuits, and can fuse them according to need.
As for the tire plug thing....and take this for what its worth.... you wasted time, and effort, and place yourself at risk, when you made the choice of NOT applying the glue.....
These plugs will last forever if glued in, you are gamblingwhen you don't glue them, they were not designed for that type of application...
ALWAYS use the glue.... its what vulcanizes the rubber on the plug, to the tire....
Why is it, that EVERYONE pulls out the nail, then goes rooting around trying to get their plug ready for insertion, or finding tools, while the tire goes completely flat?

Also, when you find it difficult to get the rasp tool to poke into the hole, you simply coat the rasp with glue, generously, and shove it in there, push in and pul back twice, and let it sit there, with the glue on it, while you slobber glue on the rubber plug in its tool (pre inst the plug in the tool, and have it sitting next to you prior), then pull out the rasp, and jamb in the plug..... I do all this stuff while airing the tire up, to get it as full as possible prior to pulling out the nail, or doing the rasp thing...
So I'll suggest you rearrange the "numerical sequence of events" you noted, to be more like:
1) pull out kit and pump, prepare plug in insertion tool, hook up pump and start filling
2) slather glue on rasp, pull out offending nail/screw/invading poker thing....
3) insert glue covered rasp, pump in and out, and leav it in place
4) goober up the rubber plug with glue
5) pull out rasp, shove in glue covered plug, pull out tool.
6) continue filling tire and pick up and restore all your tools., and pump,
7) wait 10 minutes, and cut off remaining plug material,
They put that glue in the kit for a reason.... oh, I always carry an unpoened tube and spare plugs, along also, and when I open a tube of glue, I buy a new tube as soon as I can, and leave it unopened in my kit...
Good luck, hope that plug holds... id recommend re doing it correctly with glue, shouldn't be hard to push that plug thru anyways now.
I wouldn't ride it .