Apologies in advance if this is a stupid question.
My headlamps seem to draw an awful lot of current, which I want to sort out. Regularly I get a reading of 13-14v on my voltmeter, however when I turn on my running lights it drops to 12 and headlamps it drops to 11, closer to 10 with the heater on. I had the stock alternator checked out by a shop a year ago and it is fine, and the battery is a new optima. It never seems to get down to 10, and if I turn everything off the reading turns back to 13-14 after half a minute or so.
The PO rewired the headlamps trying to a short that I discovered was in the signal stalk/highbeam switch, and I'm thinking there may be a draw there. Or is this to be expected with the anemic lucas alternator? A friend said something about the voltage regulator may be going, but I will admit to being a novice when it comes to automotive electrics.