Re: ** Turn signal Question **

Posted by sgtslag on Dec 10, 2013; 10:24pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Turn-signal-Question-tp4047371p4047422.html

Filament bulbs have no polarity -- you cannot wire them backwards/reverse polarity...

Normally, the front lights are dual filament, as mentioned.  That means that the lower wattage fiilament, usually 7 Watts, burns all the time, while the larger, 27 Watt filament only lights up when the signal is active.

If you only have two wires, on each light, then you may not have running lights, only signal lights -- see next paragraph, below.  From a safety perspective, this is not a great idea, as you only have a single headlight to show that you are a M/C, and normally, you would have a headlight, with two orange lights on either side, to indicate a M/C , more clearly.  It IS legal to run without running lights, it just isn't the best idea for safety reasons.

Check the wiring by looking inside the bulb socket:  one, central connector only, indicates a single filament bulb; if you see two contacts, in the center, then it takes a dual filament bulb, and the case of the light is ground/return for the voltages to the battery.

If there is only one connector in the bulb socket, both wires are for the bulb's power, and polarity does not matter; if there are two connectors within the socket, then insert a dual filament bulb (1057?), and apply power to the outside case of the light, and touch the other power wire to each wire, in turn, and you should see each filament light up separately.

To determine which wire, from the bike, is your signal wire, it will only have power when the signal switch is on, flashing power; the running light wire will have steady power as long as the key is turned on.  Cheers!