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1991 Dodge Dynasty headlights blink

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tricia65
New User

Dec 22, 2014, 8:00 PM

Post #1 of 3 (1936 views)
1991 Dodge Dynasty headlights blink Sign In
1991 Dodge Dynasty 3.3L 110,000


The headlights blink when the high beams are on after 15-20 mins, when the low beams are on after 15-20 mins the headlights turn off. I have replaced the headlight switch and the high beam switch. I have also check the relays with a ohms meter and continuity was fine. If I hold the high beam switch in the up position the headlights will stay on with out blinking but I will be driving with my highbeams on.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Dec 23, 2014, 2:42 AM

Post #2 of 3 (1918 views)
Re: 1991 Dodge Dynasty headlights blink Sign In
A guess only for now, sorry. The "flash" mode continues to work is strange so must by-pass other things.


One thing might cause erratic things like this is a common ground to headlights be it a strap to fender or where it needs it. If just time and quits it might just get warm and lose connection? Do they work later after cooling off?


BTW - near impossible to verify a relay by testing when problem is not happening and probably isn't when you check at all,


T



Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Dec 23, 2014, 5:37 AM

Post #3 of 3 (1901 views)
Re: 1991 Dodge Dynasty headlights blink Sign In
Using a volt meter or test lamp check voltage at fuse #1 when the high beams quit. When the low beams are acting weird check your voltage at fuses #3 and #4. Don't remove the fuses. You should have a constant 12-14 volts. If the headlamps are blinking really fast, the volt meter may not be quick enough to measure the signal changes. The 12 volt test lamp would be a better choice unless you could get hold of a lab scope.





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