does anyone know…

[alecstilleyedye]

if the electric port that you plug a trailer into at the rear of a car with a towbar can be used to draw power from the car battery by plugging in an electric hookup cable such as those used on campsites?

 

[Andy_R]

If it's wired up properly, then pin 9 is a permanent live on a 13pin socket, and if you have a grey 12 S 7 pin socket (two sockets on your tow bar, one black one grey) the pin 4 is live

13 pin layout:

If you only have one 7 pin socket, then no, you can't.

 

[F70100]

A car battery supplies power at 12 volts and campsite hookup systems supply power at 240 volts. What appliance are you intending to use ?

 

[alecstilleyedye]

only seven pins, so i guess that's it. i was more curious really; sometimes it might be useful to have a temporary hookup if i needed to run a small heater to dry out the tent...

 

[alecstilleyedye]

thanks for replies of course