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Old 06-08-2022, 02:18 PM   #651
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Great question - The passenger side has no weight sensor. There are two wires and they run to the seat belt receiver that has a the pre-tensioner integrated into it. The driver side has a weight sensor and pretensioner and thus four wires.

Best approach for the non-single red bar connector - with the key out of the ignition, mark the wires on the pigtail from the seat so they can be reconnected in the same orientation. Individually cut the wires and attach a male / female butt connector on the wire ends. Have the male / female connectors affixed so they are opposite on the wires so they cannot be accidently reversed. Pass the wires from the seat through the hole and make your connections below the upper plate level.

We cover this and more in this video link:

https://www.blingmyrig.com/pages/swi...e-installation
Thanks 1der! I watched the video in its entirety a couple nights ago to get ready for the install.

I've never seen a pre-tensioner built into the receiver of a seat belt before. When I read the word "pre-tensioner," this is what comes to mind. Since the pre-tensioner needs to cause the seat belt to retract, wouldn't it be located where the seat belt "spool" is located? I guess I'm not sure how the receiver itself would act as a pretensioner.

If the wires lead to the receiver, perhaps it's the sensor that detects whether or not the seat belt buckle is inserted?

Once again, doesn't really affect the install. Mostly just curious about their function and figured the swivel install would be the most common reason other folks would be wondering about the purpose of the connectors.
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Old 06-08-2022, 04:02 PM   #652
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In the case of the Econoline the pre-tensioning is done at the seat belt latch point. In the picture of the seat belt latch you will see a stranded cable that that runs between the tensioner and the latch. In an accident, the airbag system triggers a charge (via the two wires) that instantly yanks the cable and thus the latch, and via the seat belt this causes the seat belt retractor (your picture) to lock up.

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Beastie 3: 2002 7.3 EB Cargo: Agile TTB, CCV Mid Top, Custom Walk Through, Lots of stuff added. BlingMyRig.com
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Old 06-08-2022, 05:13 PM   #653
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In the case of the Econoline the pre-tensioning is done at the seat belt latch point. In the picture of the seat belt latch you will see a stranded cable that that runs between the tensioner and the latch. In an accident, the airbag system triggers a charge (via the two wires) that instantly yanks the cable and thus the latch, and via the seat belt this causes the seat belt retractor (your picture) to lock up.

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Awesome, so much to learn on this forum!
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Old 06-16-2022, 08:24 AM   #654
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Finished the passenger seat swivel install yesterday. Overall very smooth process. Thanks 1der for the detailed instructions and supplying the quality swivel!

As 1der already mentioned, the newer style connector is not easy to disassemble. Rather than keeping the original connector and adding bullet connectors, I just cutout the original connector entirely. Also managed to pull out one of the rear studs that go into the van floor.

More details here if you are interested.
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Old 08-07-2022, 04:11 PM   #655
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Thank you

Thank you for the great base and detailed instructions. We had it sitting in the box for about two months, but finally had a chance to install today and everything was as described.
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