64 Wiper motor 6v to 12v build

[volksian]

[volksian]

And now the switch is working again just by fiddling with the terminals.
Oh the joys
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UK. RHD 65 Type 1 (Guernsey import).
Stock. But now converted to 12V (as a temporary measure before eventually reverting back to 6V after intended full restoration)

[61redbug]

Okay, I felt this was important to post in the forums.

As part of the conversion of my car to 12V, I also got a new stock wiper switch. This is the one with terminals #30, #31, #31b, #53, #53a and #53b and the support for the washer hoses. I guess it would be a 1968 year switch that the parts places are selling.

I relied on a document from the OldVolksHome site to get the wiring correct to work with my 6V wiper motor in my 1961 Type I sedan.

I also referred to the wiring diagrams for 1961, 1967 and 1968 here on TheSamba in the Technical section.

Unfortunately, I kept blowing the fuse for this circuit as soon as I turned the ignition key to ON even if the wiper switch was OFF.

After some troubleshooting, I discovered that on the switches being sold these days, at least the ones at Cal. Import Parts, the terminals are NOT like the OEM ones for #53 and #53a.

Specifically, on these new aftermarket switches, low speed (black/purple) should be connected to terminal #53, not #53a. It turns out that terminal #53a is the "parked" circuit. It is connected to terminal #30 (+) when the switch is in the OFF position. Terminal #53b is still the high speed terminal (black/yellow).

I have the single speed motor, and so I don't need terminal #53b.

Because of this swap of the identity of terminals #53 and #53a, you will blow fuses if the black/purple wire is connected to #53a when using this 2-speed switch with a single speed wiper motor. This is because the black/purple wire is connected to ground via the brown wire when it is in the park position. Normally this would not matter if the black/purple wire from the motor was connected to the correct terminal on the switch for low speed, but due to the swapped identities on these switches now sold, that terminal #53a is actually tied to #30 (+) when the wiper switch is OFF. This is why my fuse would blow each time.

I have found schematic wiring diagrams on the internet that show this alternate designation. It sounds like this switch was possibly designed for some other vehicle, and is being sold as the correct one for VWs. If so, a note should have been included with the switch that carefully notes the change of meaning of terminals #53 and #53a.

C.I.P. owes me about a half-dozen 8A fuses! Heh...

I have to think that if one were to salvage an original switch off a 1968 VW, the terminals would be the original designations and would be correct when viewing the wiring schematic for that year car (they are here in the Technical section).

I hope this is helpful. I couldn't understand what the problem was until I got out my DVM and set it to audible continuity test mode and saw what was connected to what on the switch in the positions of OFF, low speed, and high speed.
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61 Deluxe Beetle -- 12V / 1600 / DUAL SOLEX 40

[barry cox]

C?an you take a 67 wiper assembly, and switch and install it in a 65 Beetle? It is 12v right?

[Bugzilla]

[Split 1]

Bringing this post back to life
I have the Swf wiper motor and it only has 3 wires, I fitted the 12volt armature and rewired it according to the diagram and now it wont switch off?
Any ideas?
If I remove the wire from the wiper motor to the switch at 54 the switch works?


Thanks

[Mellow Yellow 74]

I installed the 12V armature today and like others have noted, the diameter is slightly larger than the original and it rubs. Instead of machining the new armature down slightly like others have done, I undid the two screw that hold the stator winding of the motor and pushed it forward and retightened the screws. It seems to give enough clearance.
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1962 Karmann Ghia
1974 Deluxe Microbus
1985 Caravelle (Vanagon)

[KOMBI NIKO]

[glutamodo]

It says 1992 which I don't think is what you're looking for. I think it looks much like the VW unit - this thread says it's showing the Volvo one:

http://www.thesamba.com/vw/forum/viewtopic.php?t=332237
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Andy T.


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[Dan Ruddock]

There is an easier way, keep your six volt motor and string together six or seven 6 amp barrel rectifier diodes. If your solder skills are lacking you can use crimp connectors. You must pay attention to polarity. If the string does not work reverse the whole string. Would be good to epoxy mount them to a heat sink as they will get hot. Why not use a resistor? Because resistors do not load regulate and wipers will go too fast in hard rain and too slow in a drizzle. The more diodes the more the voltage it cuts. You could even use a rotary switch to give extra speeds. Dan