I had the same thing. Turns out it's the tail light sockets . It seems
the ground connection
corrodes to the point where they no longer conduct electricity. I bought
a new set for $36.
on e-bay. Trying to clean/repair them was fruitless.
'76 TR6 CF53980UO
>OK. This looks like fun.
>I have passenger side backup light working, blinkers working, and no tail
>All bulbs were recently replaced; all lights were recently working.
>Any recommendations as to where to start?
>72 TR6 85489U