Need help with an electrical plug!!

[hasaramat]

This is a through body plug on a 1969 911T. It is the one that supplies the ignition switch and a couple other things. I need to replace this. Three of the prongs have continuity with each other. Are these things available anywhere? It is 6 prong and has some larger wires in it, (main power and starter) .

[wrxnofx]

Reach out to Dennis on this forum. His username is timmy2. He builds harnesses for people, so I would expect he has these in stock.

[timmy2]

Those are cast as a unit to the dash harness wires.
I cast them after soldering the wires to the terminals in a mold.
Not a separable part unless you take apart the entire dash harness.
I could repair /replace it if you send me the dash harness.
For testing:
Make sure all wires are separated, a few of the plug terminals will have continuity between each other with harness installed.

[timmy2]

Or, if you are willing to splice wires in your dash harness....
I could build you a new one.
Pm or email me.

[911pcars]

Looks like the same type of through-body harness connector for the front/rear light housings. Should be fairly easy to look at yours and compare.

Sherwood

[gomezoneill]

I have a whole harness with several of these connections take a pic of the wires coming out of the plug so I can match it up. Then I'll send you a pic of what I have.

[Walt Fricke]

As Dennis points out, not all of these female plug connectors are the same. They are used to pass wires through firewalls or other bulkheads, and the same configuration is used to hold the round fuses Porsche used. Maybe the bulkhead connectors have the pins in a slightly different orientation, as six pin instead of five? But most, if not all, of them are tailored for their function. For instance, moving the current from the ignition switch to the main fuse box is going to require a much thicker wire than moving current to a relay coil, and so on

As Dennis says, you need to confirm that your connector is shorted internally, and it isn't just that on the fuse box wires from several fuses with a common supply don't pass through that same connector, or the like. You don't often hear of these plugs shorting out - fuses would blow first, or the wires themselves would show the signs of distress by being very discolored and with brittle insulation from being baked.

What led you to suspect that it had somehow failed?

[timmy2]

I have seen failed ones, usually due to
Overheating from a short downstream.

Here is a photo to show a dash harness under construction and the multitude of different wire combinations in the bulkhead connectors.
The one in the foreground is the ignition switch connector. Not a '69, but similar enough to illustrate what is going on in a dash harness.

[hasaramat]

The problem that set this whole thing off was the blue/yellow wire that supplies power to several of the gauges,(fuel, oil pres, oil temp, tach, oil level) has continuity to ground and continuity to the power side also. It's getting it's continuity to ground at this thur body plug from the yellow/red wire inside the plug. According to the wiring diagram the blue/yellow should be clean power from the ignition switch.

[sc_rufctr]

Originally Posted by timmy2

I have seen failed ones, usually due to
Overheating from a short downstream.

Here is a photo to show a dash harness under construction and the multitude of different wire combinations in the bulkhead connectors.
The one in the foreground is the ignition switch connector. Not a '69, but similar enough to illustrate what is going on in a dash harness.

Excellent! What type of "rubber" are you using for casting?

[timmy2]

As you noted Blue/yellow should not be in contact with the pin beside it.
Pin 2 clockwise from the alignment tab is measuring as shorting internally to pin 3 in same direction.
Likely it is the wires in the bundle that have shorted as they go into the plug or
in the taped section somewhere.
As I said earlier I can repair your harness. Just need to get it out and send it to me.
PM or email for details.

[timmy2]

Rubber is a shore 80 urethane product.

Took a lot of experimentation to get to it.

[rattlsnak]

The blue/yellow can have continuity to ground unless you unplug it from all the gauges. Your meter will just see it back-feeding through the all bulbs and the gauges to ground. Also, the Yellow/red wire has power from circuit 75 to the blower switch from the ignition switch vs circuit 15 from the blue/yellow wire so really no big deal if they cross. They are both power feed circuits from the ignition switch.

What is the problem you're having?