Originally Posted by
Reelax
fish is right: yeah sounds weird but it works. single filament tapped to positive parking AND positive signal; do not ground the side marker. i know, i know... positive and positive shouldn't work right? well when the parking lights are off, the bulb will find a ground in the curcuit via the flasher unit! what should happen now is when you parking lights are off, you side marker will blink in phase w/ your signal since it will see a positive and negative (signal will give positive). when your parking lights are on, it will stay on (finding a ground theought the flasher) then turn off out of phase w/ your signal since when the signal turns on, the bulb will see a true double positive from both wires.
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