Thanks Dave....well,sort of! That looks as if I will have to take all the wires off and dismantle (again) my rather fragile panel. I will initially try & put a connection to D+ as suggested by John C. This may not be as easy as I think with my limited soldering skills! I do at least have a good solid earth wire at the cut out from the E terminal!
Well I connected a wire as suggested & the light lit up.....but no sign of it going out as the revs go up. Now it did work before I took out all the hideous wiring! I will try cleaning the cut-out contacts with some contact cleaner...They are nice & springy & look ok...... Will it help to now what voltage should I expect at D+ on the switch board and D+ on the cut out, with engine running? And indeed at SW on the switchboard which is from the F1 dynamo ? How can so few leads be so difficult...or perhaps there is something serious amiss?
Well I connected a wire as suggested & the light lit up.....but no sign of it going out as the revs go up. Now it did work before I took out all the hideous wiring! I will try cleaning the cut-out contacts with some contact cleaner...They are nice & springy & look ok...... Will it help to now what voltage should I expect at D+ on the switch board and D+ on the cut out, with engine running? And indeed at SW on the switchboard which is from the F1 dynamo ? How can so few leads be so difficult...or perhaps there is something serious amiss?