H light switch and wiring

Anonymous-0 · Apr 12, 2009

I have a 1940 H, totally restored, almost done. I'm having 1 problem though. Charging system not working right, need some help please. 6 volt,distributor system with cutout and 4 position switch. Alternator repair guy said Ihad a bad field in my switch so bought a new aftermarket and installed, now first position charges about 3-4. second position puts lights on dim and pegs the needle to charge side, position 3 & 4 are high beam lights. What's wrong?

Janicholson · Apr 12, 2009

I am not sure exactly what is wired to what, but the Wire from the F terminal on the gen should go to the field (grounded portion of the switch)
The light wire goes to the light portion.
On L (full CCW) the resistor for the field grouind is in the circuit to switch ground through the switch body mount. on H the resistor is not in the ground, and the charge rate is maximum, field wire direct ground through the switch body. The Field remains fully grounded in the D and B positions.
There is no connection within the switch between the two systems.
This diagram set should help. JimN
Bob Ms Superlative Wiring diagrams

H light switch and wiring

Anonymous-0

Well-known Member

Janicholson

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