Campervan Gas and Electrics
If you are not qualified to fit gas or electrics then get a professional to do the job.
Forward planning is essential with the electrics. Before you can run the wiring, you need to work out where the lights, switches and sockets are going to be situated. This of course has to be done before you complete the insulation and board up the van.
The white cable on the right is the 230 volt input, The red and green cables are the 12 volt supply.
The rear of the PMS3H is clearly marked and if you take you time it is self explanatory.
But if you find the gaggle of wires in the photo confusing, then as above, get a professional in to do the job.