View Full Version : Electrical: Do 6 volt wiper motors need a fuse?

Skip Lackie
11-20-2018, 04:33 PM
Installing the correct 6 volt wiper motor in my 3R6 pickup. It's the same unit as was used on Stude 6v cars. They were so rare in trucks that the shop manual doesn't even discuss them or show them on the wiring diagram. The motor appears to have a built-in circuit breaker. True? Or should I add a fuse?

11-20-2018, 04:48 PM
An inline fuse wouldn't hurt anything. As you know, a circuit breaker would alert you that there's a problem but would reset as soon as the wire cooled, and repeat the cycle until you find the problem. But a fuse would protect completely until the problem is found and repaired.

Now that you have asked the question...I will have to go out & check mine. :confused:

11-20-2018, 09:01 PM
Wipers generally use a circuit breaker. A prolonged moderate overload can cook a motor. Sometimes the breaker is part of the park plate on the gear housing.

Skip Lackie
11-21-2018, 07:23 AM
Thanks Gord. I thought that was what was going on.

11-21-2018, 02:33 PM
The correct Wiper Switch WILL have a Circuit Breaker on it, the motors do not have Fuses or Breakers, only a "Parking Switch".

Skip Lackie
11-21-2018, 03:23 PM
Thanks Rich. I do have the correct switch. In my original post, I shoulda said that the SWITCH (not the motor) appears to have a built-in circuit breaker.