Were three point seat belts available from the factory for the 69 Firebird convertible? Has anyone installed aftermarket belts and where did you anchor the third element.

Just not comfortable with only lap belt.

Thanks

Three point belts were not available from the factory but can be retrofit, however back seat access will be difficult. Separate shoulder/lap belt configurations were available from the factory. Mine has them:



The mount point is part of the body, behind the well cover.

At the following link is info on shoulder belts for a 67 camaro conv.
http://www.camaros.org/67shoulderC05.jpg

I have not researched if Firebird did the same thing or not.

Features of the 1967 Shoulder Harness
By Jon Mello, CRG, with assistance from Blake Allan
First-generation Camaro shoulder harnesses began as optional equipment separate from the standard lap belts. The shoulder harness options (one for standard buckle and a second for deluxe buckle) were rare, and total production for the 1967 model year was less than 1400 sets. The shoulder harnesses are well known to '68 and '69 Camaro owners because they became standard equipment required by Federal Law on coupes beginning January 1, 1968. However, the '67 version is a unique animal compared with these later harnesses.
The majority of first-generation Camaro owners are accustomed to finding two sets of belt buckles between their front seat and the drive shaft tunnel. However, the '67 shoulder harness set-up has only one buckle in this location; in place of the buckle on the second belt is the metal "male" insert. Where's the other buckle? It's on the belt which is attached to the roof (or the convertible retracting top well)!
Unlike the 1968-69 shoulder belts, which tuck behind the coat hook and metal guide above the front passengers' heads, the '67 harness hangs straight down from its roof mount and the buckle at the end slips into a plastic receiver clip (see accompanying photos). As shown below, the receiver clip is mounted via two sheet-metal screws to either the side/rear upholstered panel (if a standard interior), or to the front edge of the rear arm rest (if a fold-down seat, deluxe interior, or convertible).
1967 Camaro Shoulder Harness Receiver Clip(Click on image to expand)

The convertible shoulder harness slips out of the top well between the rear quarter upholstered panel and the top compartment side trim panel. This is illustrated by the following figure taken from the 1967 Fisher Body manual.
1967 Camaro Convertible Shoulder Harness Attach (click on image to expand)

These rare options (AS1 for standard buckle and A85 for deluxe buckle) lasted only one year in this configuration and for good reason--they were poorly thought out. There was no place for the excess length of the belt to go but to dangle on the seat or floor. When cinched across the body, the extra length did not fall across your lap but dangled over next to your arm. Also, when not in use and with the windows down, the buckles would fly out of their receiver clips and crash around the rear seat area due to wind buffeting. The design was changed to the more familiar style for model year 1968, but the belts remained an option until 1 Jan 1968, when new Federal Motor Vehicle Safety Standards came into effect which mandated, among many other items, the fitting of mandatory shoulder restraints (convertibles were initially exempted).
If you have a Camaro with optional shoulder harnesses, you can take pride in having one of the more rare and (for '67 especially) unusual Camaro options available.