Originally Posted by 1der
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:
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.