Fluted rotary wiper knob - park facility

[westcott cobra]

@Fraz,

the rover switch positions turned clockwise are:

OFF Connects: 3+5, 1+6
Interm. 4+5+6
Slow 3+4+1
Fast 3+2

That means:

OFF: connected from 3 to 5, motor connection for park position, switched off by the breaker switch in park position

Interm: don't now what kind of relais do you want to use

Slow: connected from 3 to 4, motor connection for low speed

Fast: connected from 3 to 2, motor connection for high speed

Pushing the fluted knob activates the screwed in washer switch, so you can switch ground or power independend from the normal wiper switch connections to drive the washer pump.

@All,
the 2 numbers i posted for " alternative" switches are wrong. I checked all my switches at home and found out that i collected the switches just to get washer switch spares. The 35796 and 39195 are 2-speed switches but will not work with our common wiper motor. Used with the cobra wiper motor they are just 1-speeds because:

35796 internal connections turned clockwise are:
0. 1+2+3
1. 1+2+4
2. no connection
So the switch could be used counterclockwise to drive a conventionel setup not "british" wired

39195 internal connections turned clockwise are:
0. 2+3
1. 2+4
2. 1+4

Sorry for the mistakes,

Uwe

[Gonch]

Hi Uwe,
thanks for the update. Would you be able to elaberate on your connections. Do you use all off the connectors? As in the 'slow' position what does 1 do/what do you have 1 connected to?

I'm pretty sure that position 1 on the P6 switch is Delay/Intermittent. Ill attach 2 pics showing it on the original and from a parts catalogue. I Intend to use the wiper delay from a Sierra. I think the P6 had a mechanical delay from a vacuum source.

Cheers

Fraz

[Gonch]

and the pic

[westcott cobra]

1 and 6 i don't use

Westcott

[strictlypersonl]

39156 requires a relay circuit to park the MG/Triumph wiper motor. (Included in the ERA kit, of course...) There have been some schematic diagrams to fabricate one posted elsewhere.

[mjhcobra]

I was not able to find a wiring diagram that uses a relay and this switch (39156). Please post it if you got one.

[65cobraking]

The original wiper switch is Lucas part number 34374A model number PRS7 and the wiper motor is Lucas 75311F and the model number is DR3 this motor has 6 leads,I have Lucas model and part numbers for all the electrical parts on a cobra. Hope this helps.
Regards,
Mike

[mjhcobra]

Thanks for the input. Sounds like some of the info in this thread may not be correct. Regardless, I am using the Lucas 14w 2 speed motor and either the toggle switch or the rotating switch. I got the toggle switch to work-parks and all with no relays. But wanted to use the fluted knob for originality. It I can get it to park great, if not the so what.

I have seen it work with wiring diagrams that use a relay and the 39156 switch, just can't find them again.

Thanks for the part numbers-that's a big help.