E-body reverse light hole

Looking for the hole diameter for the reverse light on a 70 Cuda. I'm change one over from a auto to a 4-speed need to hole size in the firewall. Thanks.

Scroll down on page one of this awesome post:

https://forum.e-bodies.org/referenc...ocations-firewall-door-interior-ect/303/

thanks

Isn't that the shaker cable hole, not the dash mounted reverse light? (unless it saw double duty for non shaker cars?)

Sorry, I misread your question and was pointing you to the hole in the dash for the light.

Here’s what you need:

https://board.moparts.org/ubbthread...allenger-reverse-light-grommet-hole.html

Believe you need a 3/4” diameter hole for a 70 harness.