Having owned a caravan for a few years i got a bit fed up having to run a extension cable through the window to power things in the awning,so on the last caravan i installed a external socket which i clamped onto the A frame(your not supposed to drill it due to weakening the structure)and ran this for several years.When i changed the caravan a couple of months ago i decided i wanted the same again but the one thing i didnt enjoy was scrawling about under the van to plug the extension lead in,so i decided that this time i would put the socket on a extension bracket so it was level with the van side,making it easier to use.This is how i did it-it uses the holes intended for a motor mover so if you have one of these it wont fit.Anyway im not an electrician and im sure someone will point out it breaks all the rules so if you want to copy me you know the disclaimers by now.
First off was to buy a external socket,i got this from the same place as the last one Wilkinsons for just over £10 and heres where its going to fit
Step 1: making the bracket
unfortunately my van isnt parked at home but about 20 mins away so this involved a number of visits to measure up,make,revisit,adjust etc and obviously you need a workshop some tools including a welder and grinder and of course the metal,pins, cable etc the first step was to measure up. Initially I was going to mount the socket on a solid bracket and run the cable up thro one of the knockout holes but as I thought about it i figured i could actually mount the socket bracket on a tube and run the cable thro the tube because a/it was neater and b/it offered protection,so i first made the mounting plate(3mm mild steel),in which i drilled the four securing holes,i also considered that being in front of the wheel would it get a lot of spray so decided to add a piece of angle to deflect this