Technical Headlight switch

I inherited a 1948 special deluxe and Iam through the process of rewiring the whole car. The original headlight switch is what I am going to use and somebody before me tried to rewire the car so the wires have been spliced and changed. On the headlight switch their are numbers on each terminal and the shop manuel doesn't show the diagram for the switch. Does any one know what 58B, 58S, 30, 58L, 58R, 56, 15, 58K mean?



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no.

 

It might help if I you told us the brand of car

 

As in Plymouth?

 

To figure out how the switch works, get a VOM meter, set it to the ohms setting and test each individual contact. You know that when you pull out the switch to the first position, the tailights, parklights, and dash lights come on so see which contacts have continuity. Pull it out to the second position should add headlights and on old switches, the park light cuts out. In most cases the main feed wire goes directly to an unfused battery source since the switch has a circuit breaker built into it. Some switches use a separate fused feed for the dash lights in addition to the feed from the tailight circuit. Just use common sense in figuring it out. It really isn't that difficult.

 

Keep in mind that in the pre-fuse-panel days (usually '50s and back), the OEMs would use switches as junction points too. I've seen switches that have brake and interior light terminals that aren't connected to the pull knob. With eight terminals, I suspect there's more than just exterior lights connected.

 

I believe that #30 is where power is to go.

 

Might I ***ume that L and R mean left and right? Most likely turn signals.