Re: 1954 Pacific / headlight out / headlight dimmer switch/ NAPA DS102
Posted by HH56 On 2020/7/13 11:06:03
The only dark green wire coming from the headlight switch should be going to a light on the ign switch. When the headlight switch is pulled out 1 notch and parking lights are on a small glow also comes from the ign switch to better find the key slot at night. Normally there would be no fuse involved in that wire as it would be protected by the headlight breaker. If that is the wire in question then no clue what the fuse is for. The fuse could be for some kind of accessory not shown on the main wiring diagram so to know for sure where it goes you will need to trace the wire.
On the dimmer switch, other than the light green wires for high beam, I cannot distinguish between the other colors on the photo. When the headlight switch is at the second notch there should be power at the gray wire and then depending on which position the dimmer switch is in that power is fed out to either the tan wire or the light green wires to light the bulbs on low or hi beam.
I would use a meter and determine if you have power at the gray wire. If you can find a terminal marking on the switch, the gray wire should be on the common terminal. Sometimes the common terminal is labeled SW or B or C or maybe a number 3 or just positioned slightly offset from the other two terminals. If no power at the wire, the problem is at the headlight switch or between the headlight sw and dimmer switch. If you do have power at the gray wire then somehow the dimmer switch is still bad or miswired. There is always a possibility of a broken wire after the dimmer switch but for both hi and low beams to be affected there should be some visible damage.
As long as you have dash lights and parking lights, the circuit breaker should be working. It still might not be capable of carrying the current needed for the headlights without tripping but the symptom would be a cycle of all lights on for a few seconds then off then back on after a few more seconds.
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On the dimmer switch, other than the light green wires for high beam, I cannot distinguish between the other colors on the photo. When the headlight switch is at the second notch there should be power at the gray wire and then depending on which position the dimmer switch is in that power is fed out to either the tan wire or the light green wires to light the bulbs on low or hi beam.
I would use a meter and determine if you have power at the gray wire. If you can find a terminal marking on the switch, the gray wire should be on the common terminal. Sometimes the common terminal is labeled SW or B or C or maybe a number 3 or just positioned slightly offset from the other two terminals. If no power at the wire, the problem is at the headlight switch or between the headlight sw and dimmer switch. If you do have power at the gray wire then somehow the dimmer switch is still bad or miswired. There is always a possibility of a broken wire after the dimmer switch but for both hi and low beams to be affected there should be some visible damage.
As long as you have dash lights and parking lights, the circuit breaker should be working. It still might not be capable of carrying the current needed for the headlights without tripping but the symptom would be a cycle of all lights on for a few seconds then off then back on after a few more seconds.
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