I don't mean to be pedantic, but you can't "transform" a DC voltage;
transformers only work on AC. Do they use a center tap on the battery or a
regulator? If they use a regulator, it had damned well better be a hefty
one to take the slug of current that a cigarette lighter draws.

Jim



"Peter Clark" wrote in message
...
All the new (since the line started back up) 172R/S models have
transformers. The outlets are 12V.