My 1978 bonneville brougham has the power seat for the driver and the main switch moves up and down and the rear lift switch will move the back up and down but the front won’t move and I can’t get it to move forward or back. Can’t tell if the switch is bad or what. Everything clicks but I’m not too sure. Anybody have any insight on this?

This could be a couple of problems. Let's start with the simplest and work to the hardest

1. Loose switch in the door - over time and use the switch may come loose from the electrical connection in the door. Disassemble the door panel and push the switch tight against the electrical connection and see of that works.

2. Loose or faulty ground. Check the wiring in the door and under your seat for loose or broken wiring. Repair as necessary

3, Disconnect the motor from it's electrical connection and run 12V source directly to the motor, and see it if runs. If it doesn't run, replace the motor. You may have to remove the seat to do this.

Frosty thank you for some insight. Luckily the seat power switch is at the base of the seat and easily accessible so I’ll have to try this out and see what I come up with. Hopefully it’s a really simple problem and I don’t have to replace any seat motors. The car only has a little over 80,000 miles and I believe the seat was rarely moved as my grandparents bought it used in 1981. 

Frosty I actually went with the simple things and took the seat switch out and sprayed it with WD-40 while working all of the switches and everything works fine now. I guess it just got corroded inside from very little use but WD-40 does work wonders and now everything is good. Thank you