And this is part of the problem. I found that in order to fit everything in, I would have to mount the relay box on stilts. I found some tube and turned up four sleeves. Measuring the distance between the mounting holes was where the fun began. I managed to get that completely wrong - a brain fog on the numbers - and the second error was positioning (not accounting for the lid).
Third time lucky and I wasn't going to cut the base plate again, so the holes stay. I read that an ignition relay is desirable, but my thinking is that the starter solenoid covers that base although there is a spare relay in the box as I didn't realise that the twin horns I bought, come with their own relay.
The setup so far. Counsel popped by for a cup of tea, bringing with him a book on car electrics containing some refreshingly clear circuit diagrams. Armed with Tippex, we were able to correct one or two howlers on my wiring diagram. I may have to get more correction fluid for the next session.
The washer bottle has a switch separate from the wipers which I've mounted above the horn press, I'll tone its button down before it's seen in the street.
The knurled knob is the heater fan rheostat. It's original to the Riley instrument panel and after cleaning up, seems to work as intended, but as a precautionary measure I've added an isolation switch to its left.
Whilst I was fiddling about with the fan wiring, it reminded me that I had still to attach the hot air distribution box. A plywood plate, a couple of stainless-steel self-tappers, and Araldite was clearly the happiest solution.
The rev counter has at some point been converted to electronics and is set up for a positive earth connection. Rather than chance frying the whole thing by just swapping the leads around, I've sent it off to my genius chum who will sort it out and also make it work with six cylinders rather than four - that's my hope at least.
The Special Builder's Breakfast Club went to Thorpeness on the first reasonably warm Sunday. Getting there early pays dividends if deserted beaches are your thing.