[Spridgets] Wiper motor

David Lieb dbl at chicagolandmgclub.com
Sat Aug 30 11:26:59 MDT 2008


Michael,
> Anyone in the Chicago area know about this car?  I am looking for a good 
> project without extensive body work.  I have acquaintances (daughter's 
> boyfriend's parents) nearby who could help with a transaction.

I do not know this Bugeye on Craigs List, but if it is in Chicago, the tin 
worm is probably very active.

> My wiper motor has a dead short that eats fuses.  I took it apart, but 
> can't see anything obviously melted, etc.  I don't know how the wiring is 
> supposed to work to test it.  Only two repair parts are available: 
> Brushes (which look fine) and a parking switch, which is a plastic box 
> that could easily contain a short.  Anyone have any thoughts on simple 
> repairs before I order a full replacement?

Sounds like it is wired wrong or else the park switch is not working 
correctly. I did a mess of work figuring out the wiring of the two-speed 
motor a while back and it is complicated. If the park circuit and the switch 
are not wired properly, it will blow fuses right and left. Not uncommon in 
this world where few Spridgets do NOT have a DPO...

Looking at the connector on the wiper motor:
#1 (black) is ground
#2 (NLG) is part of the park circuit
#3 (ULG) is high speed
#4 (GK) is the +Park switch connection
#5 (RLG) is low speed

Try applying ground to #1 and +12 to #5 with nothing else connected.
Try applying ground to #1 and +12 to #3 with nothing else connected.

The motor should turn with both scenarios, the second one should make it 
turn faster.
If it does not, then the motor is probably bad.

The park circuit should make perfect sense to you, since you are a Brit ;-)
Pin 4 (GK) has power whenever the ignition is in ACC or ON.
When the motor is in the Park position, the park switch grounds Pin2 (shorts 
Pin1 to Pin2).
When the wipers are turned off and they are NOT in the Park position,
the Park switch connects Pin 2 to Pin4 to keep the motor running until the 
Park position.

Hope this helps...
David Lieb


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