Yes, I like to troubleshoot with a test light. I need to pack one for the Ozark rally.Able at answer my own question! With this lash-up, aka a test bulb:
View attachment 213089
was able to confirm that the flasher is working. One end of the test wire is on output at headlamp end of the white wire from the unit, the other end clipped to earth, and the bulb flashes away quite happily.
Means I need to look a bit further for the problem . . .
Details are fuzzy Raymond 'cause it was a long time ago.... but I had the same situation where both (don't recall if front or rear) came on. The power from one side was feeding across the indicator light in the tach or speedo and powering the other side. Don't recall what I did to fix it.Can shared earth between r/h and l/h turn signals cause both to operate when one side is selected?
Good thinking. But no, because I rewired the bike, again, when I fitted the new speedo and ammeter. All the old wiring has gone. Tomorrow, going to take a look at the common earths, where I fitted ring terminals from each bulb, plus another to a frame earth, over a short bolt and wound a nut down tight. All insulated with heatshrink and fitted inside lengths of bicycle inner tube, so I don't fink the earths are causing shorts. At the moment the best idea I can come up with is that the return from one turn signal is running up the common earth and acting as feed to the other side?With his new speedo, I think the flasher indicator lights were eliminated? But maybe their old wires are touching each other?
Marty, after I rewired the bike the first time, yes, everything worked. But started having intermittent problems with the ignition circuit, and such a mess of connectors in the headlamp shell - called the casquette on the Enfield - that I decided to simplify and tidy up. Hence putting all the earths to a couple of common grounds. That's when the turn signals - we call them indicators this side of the Atlantic - started playing up in bizarre ways.Did these lights ever work properly after your rewire? If not, my logic says you were in error when you wired them.
Don't fully understand your question - my fault as I don't speak electric, but the way the circuit works is, turn on the ignition and current flows to the flasher unit, the unit does it's thing and passes current along a white wire to the handlebar switch, flick the switch left or right and current flows through a black/white or black/green wire respectively to a three-way, which feeds the two turn signal bulbs on one side, which are earthed to the common earths.When you activate the switch, does it provide a path for current to the load, or a path to ground?