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Door contact switch wiring question
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Spike0180
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PostPosted: Sat Apr 09, 2016 9:59 pm    Post subject: Door contact switch wiring question Reply with quote

PostPosted: Today 2:30 pm Post subject: Re: My soon to be new 1970 vw transporter (restoration) Reply with quote Edit/Delete this post Delete this post
Ok. I'm looking at my door contact switch with contact for buzzer. I'm looking at the diagram and at where my wires are. If the button on the diagram is oriented correctly, then my wires are wrong (done my PO and explains why my buzzer and interior lights didn't work)

Here is the question. Where should each of these wires go or what do the internals of this switch act? Here is the diagram I'm working off of. (F3 is the object in question) http://www.thesamba.com/vw/archives/info/wiring/baybus_70_wiring.jpg

And here is what I have.
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Curtquarquesso
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PostPosted: Sat Apr 09, 2016 10:35 pm    Post subject: Re: Door contact switch wiring question Reply with quote

Well, you can run a simple continuity test with a volt meter to find out whether the switch opens/closes on opposite left/right sides, or back/front sides of the switch.

Brownish-grayish wire: To ground. Goes through T1 insulated connector behind instrument cluster as seen in diagram, then goes to the steering wheel.

Gray/Black Striped Wire: Goes to the buzzer relay, if you still have one.

Brown/White Striped Wire: One wire goes to the dome light, one wire goes across the the other door switch.

White: I'm not entirely sure actually. Where does it lead to currently?
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BayCreamPuff
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PostPosted: Sat Apr 09, 2016 11:02 pm    Post subject: Re: Door contact switch wiring question Reply with quote

You're holding F2 in your hand. The wires look correct to me. They are all ground wires and when the switch closes (door open) they are all grounded to the frame through the switch and screw.

Gray/Black goes to buzzer relay #85
Brown/White wires go to right door switch and interior lights
Brown wire goes to ignition switch
White wire goes to ???

Clean the contacts on the switch and try touching the unpainted metal part that you're holding in your hand to a good unpainted ground.
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lintbrush
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PostPosted: Sat Apr 09, 2016 11:27 pm    Post subject: Re: Door contact switch wiring question Reply with quote

Image may have been reduced in size. Click image to view fullscreen.

My wires in my 70 didn't match the diagram, but things are working.

Here is where my wires are going:
1) Brown/white dual wire one goes to interior light and passenger door jam.
2) Brown is ground
3) Black/white is going to ignition
4) White is going to the buzzer
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Spike0180
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PostPosted: Sun Apr 10, 2016 8:27 am    Post subject: Re: Door contact switch wiring question Reply with quote

BayCreamPuff wrote:
You're holding F2 in your hand. The wires look correct to me. They are all ground wires and when the switch closes (door open) they are all grounded to the frame through the switch and screw.

Gray/Black goes to buzzer relay #85
Brown/White wires go to right door switch and interior lights
Brown wire goes to ignition switch
White wire goes to ???

Clean the contacts on the switch and try touching the unpainted metal part that you're holding in your hand to a good unpainted ground.


So really front and back and side to side orientation doesn't matter then. I just have to make sure that any of the wires go to any one of the specified locations on the diagram. Perfect! Thanks!
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Tcash
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PostPosted: Sun Apr 10, 2016 9:36 am    Post subject: Re: Door contact switch wiring question Reply with quote

The brown wire with the blue connector has been added by a PO.
That wire should go to a ground lug on the body located to the left of the fuse box.
The other wires are ok where they are. Note there is two sides to the switch. One side is for the door buzzer and the oher side is for the light.
Tcash
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Spike0180
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PostPosted: Sun Apr 10, 2016 10:15 am    Post subject: Re: Door contact switch wiring question Reply with quote

Tcash wrote:
The brown wire with the blue connector has been added by a PO.
That wire should go to a ground lug on the body located to the left of the fuse box.
The other wires are ok where they are. Note there is two sides to the switch. One side is for the door buzzer and the oher side is for the light.
Tcash


Not the PO. The CO. And thank you tcash. I'll give it a shot.
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SevenOaks
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PostPosted: Wed Jul 11, 2018 6:27 pm    Post subject: Re: Door contact switch wiring question Reply with quote

Okay, so I know this is an old thread but I stumbled across it while searching for something else. It enlightened me enough to go take a closer look at my dome lights, dash light switch, door switches and wiring. One hour later the front dome light now comes on when either door is open (and turns off when the doors are closed) and the rear dome light turns on and off with the dash switch. Woo Hoo! Iíve had the bus for five years now and itís still a thrill to fix something even that small. Surprised

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Tcash
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PostPosted: Wed Jul 11, 2018 8:23 pm    Post subject: Re: Door contact switch wiring question Reply with quote

SevenOaks wrote:
Okay, so I know this is an old thread but I stumbled across it while searching for something else. It enlightened me enough to go take a closer look at my dome lights, dash light switch, door switches and wiring. One hour later the front dome light now comes on when either door is open (and turns off when the doors are closed) and the rear dome light turns on and off with the dash switch. Woo Hoo! Iíve had the bus for five years now and itís still a thrill to fix something even that small. Surprised


Applause
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stevespeirs
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PostPosted: Mon Oct 01, 2018 1:27 pm    Post subject: Re: Door contact switch wiring question Reply with quote

Been hunting for the correct thread, but can't find it at the moment. Is it correct that Late Bays don't have a door contact/buzzer switch on the passenger side?
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PostPosted: Mon Oct 01, 2018 2:04 pm    Post subject: Re: Door contact switch wiring question Reply with quote

No bays have the buzzer contact on the right door, only a single pole switch for the dome light, very early buses (68/69) didn't have any switches at all on either side.
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PostPosted: Mon Oct 01, 2018 2:15 pm    Post subject: Re: Door contact switch wiring question Reply with quote

I forget what year it changed...but yes. door switch on drivers side did the cab light, and door switch on slider door did cargo light. neither were controlled by any dash switch as it was omitted
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jtauxe
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PostPosted: Tue Oct 02, 2018 1:54 pm    Post subject: Re: Door contact switch wiring question Reply with quote

The dome light switches can also vary by country. My Irish RHD double cab, although 1978, had a dome light switch only for the driver's door. But now it is rewired to have switches on all four doors. Yes! It's now a 4-door double cab. Smile
[I really need to do a build thread on that truck. I've got over 6 years of work and over 2000 photographs to catch up on.]
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