No Parking Lights

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rch105

rch105

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Pocono Mountains, PA
Looking for suggestions on a "No Parking Lights" stumper for my son and I. It's 1972 Duster 340, AT.
A few days ago my son noticed he had no parking lights. He does have turn signals, hazard flashers, and Hi and Lo beam headlights. No side markers, tail or parking lights, instrument panel lights (back lighting). All gauges work, oil light, ammeter, fuel, water temp, E-brake light and low oil light. His key-in ign buzzer works if you press on one of the fuses, however...if you pull the switch to turn on the parking lights, the buzzer immediately stops. All the wires leading in and out of the fuse block appear to be ok. Also, the key-in ignition light works by timing out normally.

Am I correct in my thinking that the power comes through the bulkhead connector to the headlight switch, then to the fuses and then lights?

So, can anyone offer some helpful suggestions?

Thanks!
 
No. There are two power sources in the fuse panel, the "hot" buss and the "switched" buss


Power comes from the "hot buss" in the fuse panel TO the fuse, THEN to the headlight switch, THEN through the light switch, and then out to all the park / tail / marker lights.

This same circuit feeds cluster (dimmer controlled) lights. This power goes through the dash light dimmer control and THEN to the inst. fuse, and THEN to the cluster lamps.

Headlights are separate, they are not fused. They come off a splice from the ammeter wire, go direct to the light switch for headlights only, and there's a breaker in the light switch for the headlights

You have a service manual? If not download a free one here:

Electrical is section 8. Before you get to the wiring diagrams is a list of what the fuse panel services, page 8-127

Wiring diagram index page 8-144

http://www.forabodiesonly.com/mopar/showthread.php?p=1970088617
 
Unplug the headlight switch connector and then use your voltage meter to test out the connector and also the switch.

My guess (without doing any testing) is that you need a new headlight switch. Good luck!
 
We first suspected the headlight switch was the issue. However, we replaced it with a new one and it did not correct the proble.

Yes, we do have the complete manual and I have a master parts book for '72, so we have been scouring those. We started tracing the wires yesterday, then ran out of time.

Likelihood of a bad or no ground issue?

Thanks for your suggestions and please keep them coming.:violent1:
 
Do I understand the dash lights do not work? If not check for power at the tail circuit fuse. If no power there, this would not be a ground issue.
 
Isn't it funny how the most elementary problems can become the most difficult! The problem...the fuse that protects that circuit. Visually, it looks fine and worked...to a point. Putting the meter on it, gave a complete circuit. But put it back in the fuse block holder and the tension of the clips moved the internals to a point the movement opened the circuit. A new fuse immediately solved it. Lesson learned? Don't take any part for granted...In God we trust, for everything else...check out!

Thanks everyone for your help!
 
Glad you found it. I was going to suggest that as I just read, but see you found it. They put the dash lights and taillights on the same circuit so that if you blew a fuse and had no taillights, you would notice this because you also had no dash lights.
 
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