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Re: [T3] Horn fook-up


That something that touches the upper bearing seems to be non-exsistant in
my 65.  I cant see how it can connect since there are no slider rings to
make contact during turns.

Hmmm.. well, mine works fine thank goodness!

Keith

----------
> From: Jim Adney <jadney@vwtype3.org>
> To: type3@vwtype3.org
> Subject: Re: [T3] Horn fook-up
> Date: Monday, May 17, 1999 4:05 PM
> 
> I would like to withdraw my previous suggestion about how the horn is 
> wired on the early models. I found a description in one of my manuals 
> that rang somewhat true. From what I have been reading here our 
> various opinions seem to be converging.
> 
> The hot wire runs from the fuse box to one terminal of the horn.
> 
> The return from the horn runs back to the wiring harness and feeds up 
> the steering column, somewhere in the area of the turn signal switch. 
> Near that switch somewhere it connects to something that touches the 
> upper bearing that the steering shaft turns in. That bearing, 4¢ç
> as the one at the bottom, is set in plastic, so is not grounded, but 
> it does provide contact to the upper steering shaft.
> 
> When the horn ring is pushed the current is passed from the upper 
> steering shaft to the horn ring and down a wire that runs all the way 
> down the inside of the steering shaft to the rubber coupling where it 
> connects to the steering gearbox side. A ground jumper from the top 
> of the steering gearbox to the body completes the circuit across the 
> rubber front axle mounts.
> 
> I'll have to admit that I had never bothered to work this all the way 
> out before. It just seemed like too much trouble and it had always 
> been easy to just find the problems and fix them without really 
> understanding what the whole picture was.
> 
> As I try to remember it, I THINK my 68 was wired as described above, 
> so my GUESS is that 61-70 was like this, and 71-3 used the slider 
> under the wheel. This slider is a problem part, so I will consider 
> changing to the earlier circuit next time I have trouble with this.
> 
> Keith's method will work because the OE ball joints and tie rod ends 
> have no metal to metal contact inside until they are worn out, but it 
> will still allow the horn to sound every time you steer full left 
> lock, thus shorting the axle beam to ground via the speedo cable as 
> he mentioned. 
> 
> Jim
> -
> *******************************
> Jim Adney, jadney@vwtype3.org
> Madison, Wisconsin, USA
> *******************************
> 
> -------------------------------------------------------------------
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