Nope, there are only three wires going here, even
though there are four posts.

I may have this backwards, but I believe the ground is
always on one post, and then juice comes to the other
two posts - one to open the lock and the other to lock
it.

Most common problem is that the contact between the
door and the post is poor.  First, check the wiring
with a test light.  Confirm that ground is on one
post, and then have someone lock and unlock the front
door with the key.  You should see juice to one post
for locking and the other for unlocking.  If this is
not the case, you have a broken wire(s).

If this works, clean the posts on the door and pillar
with a wire brush to clean them.

Z

--- Fin Beven <FinBeven@MSN.COM> wrote:
> I think that this may have been addressed some time
> ago, but at the time I didn't realize that I had a
> problem.
>
> My front doors seem to lock just as they should, but
> neither the sliding side door nor the rear hatch
> will lock when the front door locks are activated by
> the key.
>
> I opened up the switch connection on the
> passenger-side pillar.  There are 4 connections, but
> mine only had wires leading to three:  the top, the
> top-middle, and the bottom connections.  There
> appeared to be only these three wires in the harness
> leading to the switch.
>
> Before I discovered this, I had been installing
> wiring in that pillar to run an extra lamp, and to
> run a permanently mounted fan.  My concern is that
> in the process I might have somehow pulled the
> connecting wire off of that lower-middle connection,
> and that it is now somehow stuck up in the pillar,
> somewhere.
>
> However, this would not readily explain why the rear
> hatch automatic locking would not be working.
>
> Any thoughts or suggestions would be appreciated.
>
> Fin Beven
> '90 Carat, Camper conversion.
> Pasadena, CA

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