OK,When not connected to the firewall connector and no headlights plugged in. You should get no reading between any color of wires at all. only should get a reading on same colors. With headlights plugged in you will be reading across the filament from one color to the other. All 3 blades or prongs on the same color wire are independent of each other. Ground Hi and low.
Thanks for the sidebar. I don't think I will be doing that, but definitely good to know.Not confusing the issue you are having.:There have been issues with retro fitting headlight.with 9004 and 9007,The grounds locations on the socket are different. Keep this in mind.
No matter which two of the three prongs I probed, there was continuity. This lead me to believe that all three are somehow connected within the sealed beam. I didn't know if that was normal or not.
All 3 blades or prongs on the same color wire are independent of each other. Ground Hi and low.
Challengers have Quad headlights. Wiring is the same for dual headlights. Quad have added wires for the high beams two prong.hi low sockets have three wires. posted the dual beam for simplicity.After completing all the testing yesterday I also believed everything was in proper order. Thats why I had no conclusion afterwards....other than a big question mark floating over my head.....lol
I will do as you have suggested tomorrow.
-Connect side Markers with no bulbs. Depending on the results, I will then......
-Disconnect all lights except for Side Markers
Yes we are talking about a Challenger with dual headlights. The two outer sealed beams are for normal driving conditions and have three connectors on the back. The two inner sealed beams are the high-beams and only has two connectors on the back.
If you suspect the switches.check them with the meter. Check each sw terminal to housing in all sw positions. There maybe more the one issue. The headlight circuit,power from battery and alt can be very distructive if there is a short. Is the instrument cluster in? When removing diconect battery. The back of amp meter will be hot if not disconnected. There is an instrument that will check the insulation of the wiring. A megger will show if there is a phantom short. 99% of people never heard of it. If you know someone that has one have them check it out. It might be better to get a new harness. Below is an example of damage of a over current from an other wire?
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