I've moved to using a relatively cheap pencil type USB rechargeable solder iron for in cabin car soldering; this one in fact:
https://www.amazon.com.au/gp/product...?ie=UTF8&psc=1 being able to screw the cap back on when not in use increases safety and there is no cord to get in the way. I have had no issues with it so far and it's done everything I needed. Inspired by how well it worked I also bought one of these temperature controlled ones for just a few dollars more but I have not used it yet,
I was tempted to try one after seeing some of David Jone's EEVblog videos:
e.g.
https://www.youtube.com/watch?v=FOa783WeDPU
m/watch?v=FOa783WeDPU