Bad Ground wire taillights Dim
So I'm doing troubleshooting for my dim tail lights. My meter indicates about 10.5 volts at the taillights. I think I know where the ground wire is, but not the color I expected at the assembly. only...
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Didn't have 40 feet or so of wire either to connect to the battery.
Use a long 120V extension cord as a jumper. Connect prongs to neg battery post, insert neg meter probe into female slot of cord. Check voltage on both sides of the bulb to see which leg has most of the voltage drop.
To check a ground point use a sharp needle to puncture the ground wire insulation near the ground point and measure voltage to bat ground with current flowing. Also measure frame voltage to bat ground with current flowing.
If the voltage drop is distributed over very long wire runs switch to leds to reduce current and voltage loss. Also works for dim halogen headlights.
Looks like water stands in that area.
Right, seal entry or drill a drain hole.
Use a long 120V extension cord as a jumper. Connect prongs to neg battery post, insert neg meter probe into female slot of cord. Check voltage on both sides of the bulb to see which leg has most of the voltage drop.
To check a ground point use a sharp needle to puncture the ground wire insulation near the ground point and measure voltage to bat ground with current flowing. Also measure frame voltage to bat ground with current flowing.
If the voltage drop is distributed over very long wire runs switch to leds to reduce current and voltage loss. Also works for dim halogen headlights.
Looks like water stands in that area.
Right, seal entry or drill a drain hole.
