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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

blinker trouble

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Old Jan 6, 2015 | 06:38 PM
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blinker trouble

In my 1972 f100 all the lights work. When turned on, the passenger blinker is brighter than the drivers. When I try to make them blink while the headlights are on, only the driver blinks. It appears that the reason the passenger is not blinking bc both filiments light up when I turn it on. When the headlights are off, it blinks, but it is brighter bc it blinks with both filiments. Both of the rears are working fine. Why would botherwise filiments be lighting up in the bulb?
 
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Old Jan 6, 2015 | 06:48 PM
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bad wiring, bulb installed incorrectly, wrong bulb, bulb socket damaged, are some of the things to check
 
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Old Jan 8, 2015 | 03:13 PM
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Typically those sockets get crusty. Remove the lense and see which element lights for parking light. Then turn on turn signal. Likely just put in wrong.

If it was lighting BOTh elements, then it should be blinking all the parking lights due to backfeeding to all the other sockets through the parking light circuit.
 
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