strange my 72 the shifter housing only worked in reverse. after driving the spider for over 10 years or more one day I poped it in reverse with out the seat belt on while working under the dash and the buzzer scared the you know what out of me.
I did not even know it had one. and latter when my switch busted in the bell I wired the back up light to the top untill I could replace the switch. I do seem to remember it would flash when going into 5th some times. or maybe on in 5th it was a long time ago but I swapped it back as soon as I had a new switch and a clutch to do.
1987 black Milano Verde, 1987 (made in 1986)blue $200 gold with ABS and LSD
1972 White spider 2000 Veloce