directional signal warning light

A question on the directional warning light on my 71 Roadster. If I am reading the wiring diagram right power feeds in from both sides of the lamp depending on which side the directional switch is turned to?? This would mean that the unpowered side of the lamp grounds through the directional lamp that's not lit?? If that's the case then you can't replace the stock warning lamp with an LED cause it will only light in one direction??

Maybe get a bipolar led - lights red for right or green for left.

MikeG said:

A question on the directional warning light on my 71 Roadster. If I am reading the wiring diagram right power feeds in from both sides of the lamp depending on which side the directional switch is turned to?? This would mean that the unpowered side of the lamp grounds through the directional lamp that's not lit?? If that's the case then you can't replace the stock warning lamp with an LED cause it will only light in one direction??

Click to expand...

You are correct Luke. LED's are soooo Honda Civic fart can tuner crowd....

Hi MikeG.
Reliance on the indicator warning light is redundant if you fit time delay relays (TDR) that switch the indicators off after the number of flashes you preset (or if you switch them off manually before the preset). No more confusion for fellow road users thinking you are turning so they pull out in front of you.
PS: warning lights are called "idiot lights" with good reason.

There are a couple of ways to make your LED type turn signal indicator to work. One is to replace your flashing unit with a 3 pin type flashing unit then run the third wire up to your indicator then to ground. Another way is to use two diodes. You would wire the diodes so that one connected to the left hand turn signal and the other hooked to the right hand turn signal. Both of those diodes would go to your LED light indicator and then to ground. The diodes prevent current from back-flowing to the other side's circuit. If you need a diagram, I can draw one up.

When I rewired my bike I thought I might use LED's in the future so I have a 3-pin type flashing unit installed and also my bike is currently wired negative ground. That way I wouldn't have to deal with looking for positve-ground specific LED's.

Apparently those turn signal idiot lights are required, at least I know they are required in California if the bike is equipped with turn signals.

Peter Joe

I guess some of this depends on your shell.
Losing the useless assimilator, I had options the add the red left, green right and the center amber for headlight dip. As far as LED's go, I don't know.

[video]https://youtu.be/gIEKW-vhhG0[/video]

See my previous post sourcing an inexpensive LED signal annunciator using diodes

http://www.accessnorton.com/brighter-turn-signals-and-indicator-t21585.html

MikeG said:

A question on the directional warning light on my 71 Roadster. If I am reading the wiring diagram right power feeds in from both sides of the lamp depending on which side the directional switch is turned to?? This would mean that the unpowered side of the lamp grounds through the directional lamp that's not lit?? If that's the case then you can't replace the stock warning lamp with an LED cause it will only light in one direction??

Click to expand...

Ha, I fitted LED's into the console lights on my MK3 and sure enough, the indicators only worked one side. Using a normal incandescent in there now.

MikeG,

If you are still positive earth these guys have what you need. L.E.D.'s , flasher and fix for single idiot light.

http://www.dynamoregulatorconversions.c ... s-shop.php

Pete

Thanks all...easiest solution seems to be installing diodes in line so no backfeeding. I seem to recall doing this years ago on a BMW R75 I had. The cost of two diodes and a 2 pin flasher was way better than the stock unit from BMW$. As far as positive/negative ground systems, on the other two idiot lights they don't care where the ground goes, as long as polarity right.