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willyp · 12-10-2010, 05:01 PM

The fault came back, during the day I realized that the left rear brake, turn and 4 way flasher was not as bright as the right rear. I removed the tail light lenses and noticed the run light filament in the 1157 bulb was illuminating when the brakes, turn signal and flashers were on. I removed the bulb and checked for proper voltages at the pins in all modes. All good so I installed the bulb and it works like a champ…….WTF?

The run light wire originates in the headlight switch and terminates in the rear light socket.

The brake/turn/4 way flasher originates in the turn signal switch and terminates in the rear light socket.

Also, did what fixit-p sugested. i checked for stray voltage at the grounds, when brakes or turn signals are on. left side rear ground was .003 and right side was .012 volts.

Anybody got any ideas?

12-10-2010, 05:01 PM	#12
willyp Registered User Join Date: Nov 2008 Location: Houston TX Posts: 362	Re: turn signals/brake lights woes The fault came back, during the day I realized that the left rear brake, turn and 4 way flasher was not as bright as the right rear. I removed the tail light lenses and noticed the run light filament in the 1157 bulb was illuminating when the brakes, turn signal and flashers were on. I removed the bulb and checked for proper voltages at the pins in all modes. All good so I installed the bulb and it works like a champ…….WTF? The run light wire originates in the headlight switch and terminates in the rear light socket. The brake/turn/4 way flasher originates in the turn signal switch and terminates in the rear light socket. Also, did what fixit-p sugested. i checked for stray voltage at the grounds, when brakes or turn signals are on. left side rear ground was .003 and right side was .012 volts. Anybody got any ideas? __________________ The price of cool aint cheap. Last edited by willyp; 12-10-2010 at 05:12 PM.