I bought a pair of those LED tail lights, but when I installed one of them, it was so dim I could barely tell it was working - both turn signal and tail light.
My 52 Chevy 3100 is still 6 volt. The wiring harness was replaced about 5 years ago. The LED tail light comes with 3 wires (black,red & white), so I'm assuming the white one is a ground wire. I hooked it to a shiny bolt that holds the bumper to the frame. (I know you guys always say most lighting problems are caused by a poor ground.)
When I touch the wires from the tail light directly to the battery posts, it is definitely brighter. When I touch the wires to my 6 volt battery charger, they are REALLY bright.
The vendor assured me these lights work for 6 and 12 volt systems.
The battery posts are nice and clean, and the cables are fairly new and in good condition. The ground strap from the engine to the frame was replaced a couple of years ago, and looks OK.
Should I expect these lights to be as bright as they were when hooked to my battery charger?
Any suggestions?