Finally made the decision on what to do about the issue of potential headlight switch burnout. I converted my headlights to H4 halogens a while back but hev been a bit concerned about posts about switch burnout due to extra load. I have been in 2 minds for quite a while to either get one of the wire harnesses with relays from MSA or to use LED bulbs. The former ends up at megabucks and the latter seems to have fostered a debate on legality ad there also seems to be a space issue between the back of the headlight unit and the bucket with the bulbs being too long and deep to fit in the space.
On the offchance I Googled to see if there were any H4 universal harnesses that replicated the MSA harness and I was pleased to say that there were loads. I took a chance and bought one from e-bay. It only cost £13 so not much to lose if it didn't work.
https://www.ebay.co.uk/itm/H4-Headlight-Headlamp-Light-Bulb-Relay-Wiring-Harness-Socket-Plug-Wire-UK-Gifts/123967182083?ssPageName=STRK:MEBIDX:IT&_trksid=p2060353.m2749.l2649
I fitted it this afternoon with success. It took a bit of fettling and some adaptations to both the harness and the bodywork but it all works fine. Basically it is plug and play with the positive coming directly from the battery and a plug that joins into the socket from the back of one of the headlights. The oem wiring on the other side is redundant.
There were 3 issues to overcome when fitting. Firstly, getting the old plug out of the back of the headlight bucket which had to be cut off. I had to rejoin one of these on one side for the feed to the relay. I had a similar issue getting the new plugs on the harness into the headlight buckets. Luckily the plug dismantles and the wires fed through the small hole and I then clipped them back into the plug. The final issue was that the wiring from the relays to the shorter side was too short so I had to re-route it through a hole I drilled in the inner wing and it fed directly into the back of the headlight bucket. I mounted the relays on the inside of the front panel next to the radiator where there was a convenient screw hole and ran the live wire along the underside of the wing to the battery. The harness comes with a fuse in this line so is protected. I realise now that I should have taken photo's as I was going to aid this description but I got engrossed in ensuring I got it finished before it got dark.
The other job I got done today was to refit my clock after getting it repaired. I have one of the calendar clocks with a Citizen movement and it hasn't worked for ages. The mechanism was fine but there was an issue with the printed circuit board that drives the movement and a friend of mine that repairs TVs sorted it. All working nicely now and it was good to to get everything back together inside again.