My backup lights are not working on my 67 GTO coupe. I have a three speed trans. Checked simple things like light bulbs and they were operational and also the fuse. Checked the back up light switch and I believe it was defective based on my continuity test conducted on the trans and on my bench. Replaced switch and still no backup lights. When I replaced the switch I put in the same spot as the defective switch. Should I try adjusting it on the trans by rotating it or look in another area.
I do not get 12 volts to the backup bulbs when the trans is in reverse. Did check back up bulbs by removing them and using battery. Also tested then installed to rule out a ground issue, all was good. Thoughts on the matter will be greatly appreciated..
Thanks, Frank