TAC Tech > Electrical

78 TA - Wiring Issues - Blinkers

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TonysTA:
Hi,

I am at the wiring phase of my restoration and having some issues I could use some pointers with. Here is what works / doesn't. I already swapped out flasher relay and turn signal relays. I can hear them 'clinking when I test so I suspect they are good. Sometimes issues are related, so if you could help me fix one, the others may fix themselves.

1.  My driver side front marker light does not flash when I put the blinker on. It's extremely faint . This same marker light works just fine when I turn on the exterior lights so I know the bulb is good.

Here is a video showing:
https://1drv.ms/v/s!ArwKVRvkdHS6g6UeYWwdzLuYyldlFw?e=ply9Ow

2. Passenger side blinker works fine, all lights operate as they should with 1 question - should the rear side marker lights flash with the turn signal? Mine don't, but will flash with the hazards.

3. When driver side blinker is on, BOTH rear tail lights blink.

4. When headlights are on, the driver side blinker doesn't work at all. The relay doesn't make any clinking sound until I kill the headlights. Passenger blinker works when headlights are on.

5. Lastly, when hazards are on, both side front markers flash weak like in the video. I know both bulbs are good.

Thanks

aussieta:
sounds like a missing ground wire
1 front side marker is an indicator only, if it is lighting up it is getting back emf voltage
2 rear side marker is a clearance light only should not flash at all, see above
3 missing ground back emf
4 missing ground
5 missing ground

TonysTA:
Thanks Aus. I checked all the grounds and also all the bulbs. I had 1 bad bulb but the real problem was I was using 1156 when I should have been using 1157 in the rear taillights, that fixed it. The two look similar and fit the same so I can see why I made the mistake.

Does anyone know if the reverse lights are supposed to come on only when the engine is running? I was trying to test them tonight with the engine off and they wouldn't come on. I don't have my seats installed at the moment and don't want to start the car until I have them back in for my own safety. I am hoping this is the case.

Thanks

aussieta:
reverse lights come on when ignition on reds or running ,and in reverse

b_hill_86:
It may be missing the backdrive linkage. If so, reverse lights won’t function. As mentioned they should work as long as the ignition is on, regardless of if the engine is running.

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