I fitted LED lights in the plus 4 (2014) up until now they have operated through a plug in switch that fits in the 12v socket.
With some lockdown time I've decided to make the installation more permanent. They will operate via 2 door switches with a manual override switch under the dash. I've fitted and wired the door switches using the provided O/B cable and located the other end under the dash along with the P/R wire.
The lights now operate but only if I attach an earth wire from the door switch fixing hole to the bodywork, obviously because they are into wood.
Question,
Is there a best or proper point to attach the earth wire?, anybody know how the factory does it?
