Re: Dome light switch

Posted by HH56 On 2016/5/6 9:13:47

The single terminal in various forms was for all postwar models but it gets a bit hit and miss on prewars. It would appear some late 30s models, the 41 Clipper and all 42 models also used the single terminal switch. From what I can see on schematics, those cars had the power fed directly to the bulb via body feed wiring and used a single terminal switch to break the ground side. No idea how many models have door switches also controlling the dome or courtesy lights but switching the ground side makes it a lot easier with multiple switches. Just a single power wire and all the switches could be in parallel operating independently on the ground side with minimal wiring needed per switch.

On the 40 and 41 conventional bodies it appears they took power for the dome light from the tail light circuit. That was routed thru the two pole switch and then on to bulb. Ground was directly at the lamp assy..

Here is a 41 schematic showing the power take off point at the license and tail light circuit.

Attach file:

---

  (58.79 KB)