How do you replace antenna on 1992 Toyota tercel?

Answer 1

Undo the screws holding the antenna assembly mounted on the roof of the car.

Detach the cable from the back of the radio. This will be accessible from the driver's side footwell and visible from the passenger side footwell. Tie a guide line (strong string or twine) to the plug of the antenna cable.

Withdraw the antenna assembly (pull it out and towards the back of the vehicle. Untie the guideline from the old antenna and tie it to the plug on the new antenna.

Unbolt (15/32" hex head?) the dash panel from beneath the steering column. There are four bolts and a Phillips screw holding this in place. (Two bolts are are hidden with clip on hatches). The dash panel can be left in the footwell for now, you do not need to detach the hood latch release.

Find where the string enters the car framework on the right side and pull the cable down and out of this hole. Having a friend thread and guide the antenna cable into the roof opening may help. Once the antenna assembly is fully seated into the roof, screw it into place and return to the footwell. Use the guideline to thread the cable through the under-dash space. The cable should be threaded over the steering column to avoid having it drop into the pedal space. Remove the guide string and plug the antenna into the back of the radio.

Reattach the dash panel under the steering column and replace the bolt covers.

It is possible to do the replacement without running a guideline but you will find it difficult to get the cable out of the frame into the passenger space.