speedo cable

hpw · Posted: Sat Sep 30, 2006 12:49 pm Post subject: speedo cable

This is attached between the speedometer and the speedometer cable. I

have no idea what it does.

Edited to add that I now know it is the back-up light switch

It is screwed to where the speedo cable

would go normally.

It is not allowing me to hook up the speedo cable beacuse the reciever

inside this attachment is to far recessed for the cable

to reach the square hole....does anyone have any ideas

what this is or even what it does? My car is on up on blocks right now

and I'm trying to do some front end work, as I would go ahead and see

what it did with it off, but I can't right now.

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jason_hamilton · Posted: Sat Sep 30, 2006 2:52 pm Post subject:

It's a back-up light switch, used befor they put the simpler one in the nose cone.

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1969 Karmann Ghia coupe
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hpw · Posted: Sat Sep 30, 2006 3:02 pm Post subject:

jason_hamilton · Posted: Sat Sep 30, 2006 4:32 pm Post subject:

The switch insied the housing senses the direction of revolution of the cable. When it goes backwards (yes, your speedo can run backwards), the switch contacts close, completing the circuit and lighting the backup lamps.
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1969 Karmann Ghia coupe
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70 140 · Posted: Sat Sep 30, 2006 4:53 pm Post subject:

Does your car still have the backup lights on the rear bumper? I imagine they didn't work....since you had no speedo cable. I would leave that in the car. When you hook the speedo back up you will have the switch working again....

hpw · Posted: Sat Sep 30, 2006 5:08 pm Post subject:

The problem with the speedo cable is the inside wire(the one that actually

spins) does not protrude out far enough to catch this "extra" attachment.

It is rececessed at least an 1" to where it catches and the speedo wire only

protrudes out approx. 1/2" from the sheathing.

Clear as mud..

Rendering the speedo and the back-up light inoperable.
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hpw · Posted: Sat Sep 30, 2006 5:50 pm Post subject:

I wonder if it would be possible to trim some of the exterior sheathing

on the oppositte end of the speedo cable, allowing the interior wire to

slide "out" at the end of where it hooks up to the speedometer.

Does that make sense???????

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hpw · Posted: Sun Oct 01, 2006 7:56 am Post subject:

Does anyone else have any ideas on this?

Is there a different speedo cable with a longer interior wire protruding

from the end?
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hpw · Posted: Sun Oct 01, 2006 11:01 am Post subject:

Trying to keep this bumped up, maybe

someone will see this and have some ideas on how to get

this hooked up Very Happy

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HouseofGhia · Posted: Sun Oct 01, 2006 11:09 am Post subject:

I didn't catch whether you had back up lights on the rig or not.

if you don't, then leave the switch out.

I have some of these switches at the shop and some speedo cables. Let me take a look at how they go together and see if I can come up with a fix.

Mike
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hpw · Posted: Sun Oct 01, 2006 11:42 am Post subject:

I'm sorry, your right I didn't respond about the back-up light

but there is one on the center of the bumper...
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hpw · Posted: Mon Oct 02, 2006 2:21 pm Post subject:

bumpity,

bump
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70 140 · Posted: Mon Oct 02, 2006 2:47 pm Post subject:

There must be a longer cable, how else would it work? You probably have a cable for a later car.

hpw · Posted: Mon Oct 02, 2006 3:23 pm Post subject:

Does anyone know where I can get an exploded

view of this hook-up, than maybe I can tell what is amiss?
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70 140 · Posted: Mon Oct 02, 2006 3:32 pm Post subject:

Since this is a dead topic, I am going to fathom a guess.

I am now guessing the cable is no different, as they are all listed as 56-71...I wonder what 55 ghias use Wink

And 72-74 (understandable as it was a different speedo)

So my guess is there is a lengthening piece on the switch which extends into the speedo.....and its missing. KGPNR doesn't have any pictures of the switch...

hpw · Posted: Mon Oct 02, 2006 3:40 pm Post subject:

stale air · Posted: Mon Sep 01, 2008 1:38 pm Post subject:

Ok, I have one on my 58. Its a pretty simple install. On the one open end of the b/u light switch there is a plastic square post that once your b/u light switch is screwed onto your speedo should slide into it, just like the speedo cable would. On the other open end, the one with the square hole, thats where the speedo slides and screws into. Thats pretty much it, mine works like a charm. I dont see that you are missing anything, unless your square plastic post is broken or missing.
Hope this helps. Cool

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hpw · Posted: Mon Sep 01, 2008 1:54 pm Post subject:

stale air · Posted: Mon Sep 01, 2008 2:02 pm Post subject:

Ya, sorry, its kinda hard to explain. I dont have a pic because its on my car right now. I guess if you want a pic I could snap one for ya. Let me know.
What I was trying to say was that on the one open end if you look in the whole there should be a square post. That end screws into the back of the speedo. The other end, with the open square hole is where the speedo cable screws into. Now, I had another one on my other car. On that one the plastic post actually broke off inside the speedo and when it did the speedo stopped working. The light still came on but the speedo didnt work.
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hpw · Posted: Mon Sep 01, 2008 2:11 pm Post subject:


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