i working electronic component shop before, now still working of electronic relate job, already use and look many model of the solder gun or pen, but haven't c got 12Vdc one. I recommend you using "GAS" (same with lighter's gas) solder pen. Light, small, easy to portable, and can replace lighter .
I too have not seen a 12v soldering iron in pasar road, only the portable soldering iron that uses lighter gas only. I have seen a Tamiya Soldering Iron that uses 7.2V or 12V batteries to solder, but the wattage is quite low to solder heavy gauge wires.
i found the solder gun..but 60 buck..for only 12W ...haha..so end up leave the shop directly..btw, anyone can help me to find some disco strobe light, i wan the cheapest the better...
hope to get some help on this, can anybody tell me how to wire the cabin light, cos the stock one in my car does not work, dont think it has power running into it at all, im driving a saga aeroback,, can any sifu...