messed up turn signal/ flashers

michael_boomin

Not-quite-so-new-guy
Dec 29, 2020
12
3
alright , I have a weird situation here on my 1978 el co and I will try and describe it the best I can. I changed all my bulbs to LEDS with the exception of headlights and marker bulbs. I also put in an EL12 flasher and check all fuses. when i turn my hazards on with headlights OFF they flash as they should . when i turn on the headlights nothing flashes. when i turn on turn signals my rear lights do not work and the rear marker bulbs for the opposite side also turn on. when head lights are on nothing happens , no hazards turn signals or brake/reverse lights. i’ve cleaned all light receptacles. read a lot about checking grounds but not sure where to find them. looking for some advice on where to go from here . thank you
 

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Dayzedandkonfuzed

G-Body Guru
Feb 9, 2010
961
93
Anglemont, BC
Also, not all EL12's are good for LEDs. I would make sure that it is an LED specific flasher. If not, buy one from painless, part number 80230. It has a ground wire that needs to be hooked up. When you see the picture of it, it looks like its a 3 prong, but its just a shadow, definitely a 2 prong.

If everything worked fine before the LED swap, this is the first step I would take. I have sold EL12's that were good for LEDs, but caused problems. Of all the LED upgrades that I've helped customers with, many had issues with LED flashers or resistors. The painless flasher always solved the problem.
 
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Reactions: 1 users

airboatgreg

Comic Book Super Hero
Oct 2, 2016
2,751
113
Sounds like ground issues in the sockets. Pull bulbs out and make sure they are the right ones. Look closely at the ground tabs in the sockets. Take a jumper wire and touch the bulb base to see if it starts working
 

michael_boomin

Not-quite-so-new-guy
Thread starter
Dec 29, 2020
12
3
Also, not all EL12's are good for LEDs. I would make sure that it is an LED specific flasher. If not, buy one from painless, part number 80230. It has a ground wire that needs to be hooked up. When you see the picture of it, it looks like its a 3 prong, but its just a shadow, definitely a 2 prong.

If everything worked fine before the LED swap, this is the first step I would take. I have sold EL12's that were good for LEDs, but caused problems. Of all the LED upgrades that I've helped customers with, many had issues with LED flashers or resistors. The painless flasher always solved the problem.
painless flasher is coming in today. hopefully it is what i need to be done with this
 
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Reactions: 1 user

michael_boomin

Not-quite-so-new-guy
Thread starter
Dec 29, 2020
12
3
flasher helped but not out of the woods yet. with new flasher both turn signals work properly. with headlights on left side works fine but the right side does a couple tripple clicks then stops work until headlights are off.
 

86LK

Royal Smart Person
Jul 23, 2018
1,104
113
and that was with the engine running, right? I'd say start doing circuit checks for amps, volts, and ohms. also check grounds. IIRC, the psgr side is the end of the headlight circuit.
 

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