All of Chrysler power window motors from ‘63ish to early ‘90’s are the same, except are different from left to right. The exception to that is a difference in electrical connectors – they made 3 different connector styles in time span indicated, with one of those changes made in sometime in the mid the ‘80’s.
The electrical connectors (both sides) are available aftermarket and from Chrysler.
You can mix/match connectors as well, like style A on L/F, style B on L/R and Style C on both Right sides, for example. Don’t let that stop you from you goal. Just solder the electrical joint and shrink wrap it afterwards and you will be fine (slip on the shrink wrap tube before soldering!)
I have no earthly idea why Chrysler changed the rear doors (and glass) between the 4 door and station wagons. It makes no sense to me – but that is how they did it. The difference is rear edge of outer door edge and its sloop upwards. It also effects both door glasses (fixed and moving glass). The weatherstrip is also different.
If a person was to remove the top door frame and glass, then the whole lower half (2/3rds?) of the door is the same.
'77 F & M body part numbers:
Single window switch (for three doors)(up to 2/15/77) 2926118
Single window switch (after 2/15/77) 3747286
Note: the new and old style switches can be swapped without problems as the button is the only difference. If you don’t point the difference to anyone – no one will notice the difference between then.
Old style pictured first. Note this style is also used for the ‘60’s performance cars so may be hard to find an NOS one.
Convex vs. concave? Not sure how to describe the difference (or why the change).
The newer style came on fewer vehicles, but are not as sought out as the older ones are.
L/F (more door car – 4 switch) (up to 2/15/77) 2926117
L/F window switch (after 2/15/77) 3747288
I looked for aftermarket window switches just now and did not find any. I know I have seen them before (but many years back). Chrysler used the same power window switch for pretty much everything, until the early ‘80’s, even in pickups.
For connectors. If you find window motors (again for pretty much anything Chrysler made from mid ’60’s to early/mid ‘90’s, send me (or post here) picture of the electrical connector and I can provide you with part numbers from Chrysler or aftermarket.
If you are not sure what motors fit, then find some and post links here and I can give the thumbs up (or down). Sense you are missing the “other end” connector, the motor electrical connector type won’t matter.
Changing a window regulator is basically the same procedures (power or manual).
The only difference is if you remove the motor from a regulator out of car, is BE CAREFUL! The power behind that spring can/will sever fingers and launch parts and/or tools with quite some force.
In car, with weight of door glass counteracts the spring, then there is no problem.
I have seen cars with one door with a manual window regulator installed and door panel off, so at least the window would be up, in a power car.
BudW