12-03-2017, 07:40 AM
If the "drive" light works I would assume the grounding was sufficient.
Since multiple other lights are not working it's unlikely that wiring is a problem, after all what is the likelihood of multiple wires failing at once. There is a single possible exception to this; if the power supply to the indicator bulbs goes first to the "drive" bulb and then in series to the others, a break just past the "drive" bulb would give you the symptoms you have. If there is a way to check for voltage on the ground wires from the bulbs at the entry to the switch thingy at tell tranny you would then prove whether the open circuits were up or downstream of that point.
Since multiple other lights are not working it's unlikely that wiring is a problem, after all what is the likelihood of multiple wires failing at once. There is a single possible exception to this; if the power supply to the indicator bulbs goes first to the "drive" bulb and then in series to the others, a break just past the "drive" bulb would give you the symptoms you have. If there is a way to check for voltage on the ground wires from the bulbs at the entry to the switch thingy at tell tranny you would then prove whether the open circuits were up or downstream of that point.
Jon Kabbe
1993 coach 337 with Civic towed