Really good comments here. I want to clarify my situation and highlight a few points:
I have a 2016 Honda Fit. Two cig outlets(sockets.) One in dash and one in center cubicle between seats. They are individually factory fused with 20a sub-mini fuses.
Running an SSB rig @ 100w is VERY different than an FM rig @ 50w. The FM rig is at 100% duty cycle, the SSB rig isn't, ever. If it was, that poster would have then explained how much damage occurred to wiring, socket & plug.
I originally had an HT (5w) in my car. I was talking to a ham and sending some APRS msg. The HT went dead and I reached in to ensure plug was firm in the socket. It was hot. So hot is branded my hand! The plug I had was a very cheap adapter, ill fitting in the socket. The resistance on that poor connection, even at 5w was enough to literally cause the plug to burn me. Had a short talk with god about that!
Ditto on the auto wiring. No matter what you do, work on the side of safety and derate your fuse. By derating, I mean use a smaller fuse that will blow sooner. Better safe than sorry. Keep a good stock of fuses in the glove box.
The Honda I own uses a battery one would think was made for a motorcycle. Wiring direct is out of the question. All my other vehicles I owned, I did run direct to battery, then a fuse > through a DC noise filter > radio.
What I need is an auxiliary battery, charged by a 5amp limited plug. If I could, I would have a smart limiter, it would detect when I turned car off, and open the connection to the radio, but I'm dreaming out loud!
A second option, have the folks at our auto-electric shop modify the socket in the console cubical to add powerpole outlet for me, but I fear the price tag.
Tnx for the good feed back.
73
Jaye