I have a two speed wiper switch that is labelled 30, 31, 31b, 53,, 53a and 53b. The switch checks out on all positions on my meter according to the rules.
- Switch off: 31b connects to ground (via its mounting to the dashboard), 30(+) connects to 53a
- Slow speed position: 31b is open, 30(+) connects to 53
- High speed position: 31b is open, 30(+) connects to 53b
I have a four terminal motor, only 3 terminals are connected and 53 and 53b have been jumpered together.
The wiper motor works but only ever at a single speed, could this explain why?
Could I have a broken speed on the motor or was this a common thing to do? Anyone seen this before? Is slow speed so slow that its been omitted?
many thanks,
Andrew