Electrical problem with tailgate window

[ReneH]

Ok...now i have a problem at my own truck...

I can't move the tailgate window when the tailgate is closed. I already have bridged the limiter switch, without success.

I only can move it, when the tailgate is opened and I'll close the latches or bridge the switch. If I try to close the tailgate, the window stops to work close before the tailgate is closed.

Is there another switch? I only found one inside the tailgate on the driver's side.

Thanks!

[85lebaront2]

Rene' I believe you probably have one or more broken wires where the harness bends entering the tailgate. This is not an unkommon issue on power tailgate windows.

[ReneH]

Hi Gary!

This is a good point...I already have had repaired two wires in the past.
I should check it and replace the cable.

[Gary Lewis]

Hi, Rene.  But that was Bill that answered your question, not me.

[ReneH]

Oh...maybe it's time to go the Ophthalmologist...

[ReneH]

Hi BILL!!!!!

NOW I  answer the right person...

I've found the problem exactly where you've said:


Two wires were broken directly after my repair shells...now I'm changing all three wires completely to a 3x2.5mm² H07RN-F cable.

[Gary Lewis]

No!  That was me!  

Actually, it was the old sage, Bill.  Isn't he a wealth of knowledge?  

Glad you found it.

[85lebaront2]

Having owned a couple of Fomoco wagons (1970 1/2 Falcon and 1971 Colony Park) I am quite familiar with broken wires at the tailgate hinge, particularly since both were dual action tailgates.

[ReneH]

So, I've fixed the problem:

Before:



One of the wires was corroded completely after the connector behind the taillight.

After:




I'll change the complete wiring harness in the future. I'll also change the H07 cable again to one made for robotic applications, cause these are very reliable and flexible.
But also by now the window already runs much faster.

[Gary Lewis]

Those Scotchlok connectors w/o the moisture seal are a very poor choice in situations like that.  Glad you got it fixed, at least for the moment, with a very good solution later.  

[Littlebeefy]

You know your key also rolls the window up and down, right?

[ReneH]

Yes, I know. I also have repaired the switch in the past, cause it was bad.
Currently I can use the key and my remote.

When I replace all wires with durable double insulated cables and all connectors with distribution boxes, I will also bring the tailgate switch inside back to life.

I will do a central distribution where the glove compartment is located. This is so small, I can set it aside.
For this, I use industrial terminal blocks.

For the tail power distribution, I'll use a 2x 5AWG cable to bring the power to the back of the car.
All switches are only controlling relays, so I only need small wires from front to back for it.