78 Newport door switches

[GOREO]

Hello,
New member here. Question on the functions of the 2 front door switches shown in the picture. It's a 78 Newport 4 door hardtop.
Thanks.

 

[CBODY67]

Does the lower item rotate or push in? If it rotates, check the other front door and see if it is not connected to the shoulder belt release for the retractor. The "flipper" might be missing from it.

CBODY67

 

[bigmoparjeff]

I believe the upper switch is for the "door ajar" warning light.

Jeff

 

[CS43FI]

As @CBODY67 mentioned, the lower one allows shoulder belt to be locked to allow some slack for passenger comfort. Retractor is unlocked when door is opened and the belt is retracted immediately.

Owner's manual:
https://www.newyorkeronline.org/factoryliterature/1978/OwnersManual/imagepages/image8.html
Figures 7 - 9.

This button is integrated part of seat belt retractor assembly and I haven't found it as a separate service part. I did fix one by replacing the broken cable with piano wire and 3D printed the missing button pieces.