No taillights/parking lamps - ??? - Team Camaro Tech
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post #1 of 10 (permalink) Old Oct 2nd, 18, 09:41 AM Thread Starter
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HELP - No taillights/parking lamps - ???

'69 Z28



Tailights, parking lamps, tag light were working. Until this weekend. Brake lights - OK; turn signals front and rear - OK; taillight fuse - OK.


Now, no parking lights, no tail lights, no tag light, rear side markers.



What am I missing? I have dash lights (which are supposedly on the same circuit as tail lights).


The harnesses are complete and not shorted (I wouldn't have brake lights and turn signals if they were).


Thanks for any advice.


Paul

Last edited by vabeach56wagon; Oct 2nd, 18 at 10:05 AM.
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post #2 of 10 (permalink) Old Oct 2nd, 18, 12:03 PM
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Re: No taillights/parking lamps - ???

I think I would start at the light switch. The taillights, parking lamps and tag light all have that switch in common. Make sure you have power coming into the switch and going out on the right terminal when you select the various switch positions.
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post #3 of 10 (permalink) Old Oct 3rd, 18, 03:39 AM
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Re: No taillights/parking lamps - ???

Could be the light switch...to verify, check to see if you have power at the tail lamp assemblies. Using a simple test light, such as a cheap screw driver looking tool that has a lamp in its handle (has a ground wire and clip you attach to a ground), probe the parking light wre at the rear light bulb sockets to see if you have 12 volts. If you do, its a grounding issue for that circuit. Check, and double check the bulbs. Take a known good one, and replace the bulb to see if that fixes it. I will use a volt/ohm meter, set it to ohms, and test the teeny tiny wire to see if I have continuity. I used to hold the bulb up to light, flick the glass with my finger to see if the filiment wiggled, indicating it was broke; my eyes are not that good anymore, so using a know good bulb or a volt/ohm meter is your best bet.

If you do not see voltage at the wire at the tail light bulb socket, then you need to trace back towards the light switch. Best to have a wire schematic for your year Camaro. These can be bought in color, and are cheap, as the factory wiring is simple on these cars. Remove the back seat and look for the wiring loom on the drivers side, running along the bottom left.

In just about 90% of the time, wiring issues come down to a missing ground for a circuit. In your case, if the 69's are the same as the 67's, the grounds for all the tail lights come from the tail light assembly itself; when a tail light assembly is removed from the body, you will see 4 "nipples" on the tail light assembly that touch the body when the tail light housings are mounted. When cars get repainted, these nipples don't make good contact with the metal, and rear lighting does not work. I'd check this for good measure, even though some of your rear lights in the tail lights are working.

To make it easier, make a ground strap from some spare wire. Fasten one end of the wire to a good body ground in the trunk, and touch the other end of this wire to the metal of a tail light housing. Do the lights work? If so, you know the housings are not grounded good.

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post #4 of 10 (permalink) Old Oct 3rd, 18, 04:44 AM
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Re: No taillights/parking lamps - ???

Tail lights and dash lights are not on the same circuit, you cannot vary brightness of tail lights as dash lights can be varied.
If brake/stop lights work, then ground is good and power is good because stop lights and emergency flashers have their own fuse.
If no front parking lights, yes, then switch, if front works, then check body plug behind kick panel.

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post #5 of 10 (permalink) Old Oct 3rd, 18, 08:33 AM Thread Starter
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Re: No taillights/parking lamps - ???

Brake lights, headlights, turn signals all working (front and back), no front parking, tail or side lights at first detent or full position.


Grounds solid....gotta be the switch....new 8 pin ordered. I've never seen just one side fail before.


Thanks for the guidance.


paul

Last edited by vabeach56wagon; Oct 3rd, 18 at 08:39 AM. Reason: Complete info
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post #6 of 10 (permalink) Old Oct 3rd, 18, 10:01 AM
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Re: No taillights/parking lamps - ???

Letís start simple

Park, tail, tag light and side markers on fused on the same circuit.

Did you check the fuse?

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post #7 of 10 (permalink) Old Oct 3rd, 18, 10:08 AM
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Re: No taillights/parking lamps - ???

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post #8 of 10 (permalink) Old Oct 7th, 18, 06:04 AM
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Re: No taillights/parking lamps - ???

Quote:
Originally Posted by Vega$69 View Post
Letís start simple

Park, tail, tag light and side markers on fused on the same circuit.

Did you check the fuse?
He says it's good in his post and the fact that dash lights work indicate to me that it is as dash light fuse gets no power if tail lamp fuse is blown,

IMHO it's in the switch. It may have burnt the contact on the slider or maybe the whole buss bar for tails is cruded up. Odd to me that both front and rear are out.

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post #9 of 10 (permalink) Old Oct 7th, 18, 07:23 AM
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Re: No taillights/parking lamps - ???

Ok if he said fuse is ok but how did he test fuse?

Iíve seen fuses that look good and check good for continuity but are still bad. I would start by replacing the fuse just to rule it out.

If fuse is good could be switch. I would pull the plug off the switch and apply 12v to the orange wire. If lights come on then most likely switch. I use a Power Probe for trouble shooting. Great tool.

https://www.powerprobe.com/ppbasic-page

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post #10 of 10 (permalink) Old Oct 8th, 18, 11:05 AM Thread Starter
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Re: No taillights/parking lamps - ???

Switch replaced: problem solved. Thank you for the discussion.


I check fuses with a multimeter.



What I don't understand is why the console courtesy light works through the light switch, but not off the door switches.....that little problem will be attacked in due time.


paul
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