64ragtop
Well-Known Member
A daisy chain of parts and hardware isn't a conductor when compared to an actual copper wire. For that reason, If a wire was attached at only 1 screw that grounds a bulb socket, that bulb wiil glow a little brighter or a lot brighter than all others. A ground wire added at the headlight switch is a fairly level/equal ground when are the parts are new or renewed.
True, but RedFish, aren't we approaching the realm of the theoretical here? Wouldn't the conductivity from one end to the other of the pot metal cluster housing, compared to the same length of copper wire, or silver or gold wire be too small to measure?. When I put one lead from my Amprobe DVM at each end of my cluster housing, it reads .04 Ohm. When I short the two meter leads together, it shows .04 ohm.
Perhaps it would be "better" to attach the ground wire to a screw that does not provide ground to one of the bulbs, maybe one that mounts the speedometer, or drill and tap a new grounding point somewhere away from any of the bulbs. I might be wrong, but any ground is better than NO ground. Debating the best point on the cluster chassis to attach the ground wire is like debating how many angels can dance on the head of a pin, isn't it?
ATB
BC