Wiring a single filament bulb to flash?

wrote: (clip) Possible to wire to cause the single filament to be "On' as running light, then flash as a turn signal? ^^^^^^^^^^^^^^^^ There is probably a relay that responds to your turn signal switch, diverting power from the running light, through a flasher unit to the other filament. Maybe you could use this relay to insert the flasher unit in the circuit leading to your new mirror lights.

If it's not done with a relay, you should still be able to use the existing turn signal switch to send power through a flasher unit.

One possible problem: turn signals are generally a heavier, brighter filament than running lights (or what I call parking lights.) The flasher may not work properly with the lighter load.

i just figured out a way to make that happen cheaply. I found one of thoze trailer wiring adapters that let a vehicle with yellow turn signals work a trailer. Looks like I can wire it to my bikes turn signal wiring so my bulbs work both as running lights and turn signals. A lot cheaper than the ones they sell specifically for bikes.

Mabee do like GM did.Side markers flashed opposite signals. 1157 signals and 194 markers. Markers wired to ground through the signals. Blinked out when signals came on.

power to mirror light, ground side of mirror light connected to live side of signal lamp. Signal lamp grounded as normal. When power is on the mirror lamps and the signals are off, power flows through the mirror lights (lighting them) and through the signal fillaments (front and back in parallel in this case) to ground. The signals do not glow due to low current. When the signal is energised, the mirror light has power on both sides, so no current flows and the bulb blinks off. The signa;s DO glow.

To make it work you would be connecting the "brake" connection on the "car" side to the running light wire and the "signal" wires to the signal wires of the "car" side, with the mirror lights on the "trailer" side. if I understand you correctly.

You are only having the mirror lights for both "marker lights " or "driving lights" AND signals?????

If so, you can still do it the "simple" way if the fillaments in the mirror lights are significantly lower current than the rear signals.

Broke out the DMM, and after a bit of poking around, ended up connecting BOTH turn and running light lines to the pwr lead on the mirror.

Lights up as running light, when turn switch is energized, running light switches OFF, then flashes as a turn signal.

thanks for the advice and suggestions.

gary