Re: Strange electrical problem

Posted by Dennis Pierce on May 14, 1998 at 22:54:00

In Reply to: Strange electrical problem
posted by Jerome Bokelmann on May 14, 1998 at 16:50:00

This is one of the strange actions of the three brush generator that was used in the Model A.Depending on the position of the third brush, increasing rotational speed can actually cause the output to drop!
From the description of your problem, I suspect that you have the third brush set too high.I believe that it needs to be set back, which is toward the direction of rotation.
The +10 amperes that is indicated on the ammeter that you memtioned is not what is being drawn by the lights.It is the amount of the generator output that is flowing back into the battery.
Hope this helps.
: I've got a problem with the electrical that I'm going to need some help on.All lights work, but I've got a sever amperage draw on the headlights.
: First some background:The cars electrical system is completely stock (i.e. generator, standard cutout, regular lightbulbs, ammeter, etc).
: I noticed that the ammeter is in the negative area (around -1 to -3 amps) when the headlights are on and the car is idling.I tryed to speed up the throttle and in doing so, the ammeter starts to go positive then more negative.The faster the RPM's the more negative it is.All lights appear to be bright and working so I didn't suspect a short in the wiring.

: I switched off the lights and ran just the parking lights since the parking lights are in the headlights and uses the same tail light. I wanted to see the draw that they have.It showed +10 amps during idle.I have a hard time believing that these littlenon-quartz hallogen bulbs would draw over 10 amps between them.

Follow Ups:
Re: Strange electrical problem - Solved Jerome B. May 18, 1998 at 08:50:54(0)

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