back up lights wiring diagram

[big block]

Hello
I,m getting ready to wire up my backup lights on a 1974 duster. Not original wiring harness. It,s a painless harness. I have the three prong switch on the transmission. It is a 727 trans. i purchased a wiring harness from the a bodies classifieds. It has 3 wires 2 side by side and 1 on top in a t configuration. I checked the trans switch and show condanuity
from the 2 outside post. Don,t think this is correct. Does anyone know if this is correct or do I have a bad switch.
Does anyone have a wiring diagram to wire the lights up? I put power to 1 wire to the backup lights and they work.
I really need a wiring diagram.


Thanks big block

 

[rva]

Hello
I,m getting ready to wire up my backup lights on a 1974 duster. Not original wiring harness. It,s a painless harness. I have the three prong switch on the transmission. It is a 727 trans. i purchased a wiring harness from the a bodies classifieds. It has 3 wires 2 side by side and 1 on top in a t configuration. I checked the trans switch and show condanuity
from the 2 outside post. Don,t think this is correct. Does anyone know if this is correct or do I have a bad switch.
Does anyone have a wiring diagram to wire the lights up? I put power to 1 wire to the backup lights and they work.
I really need a wiring diagram.


Thanks big block

three prong switch,the outside pins are for the backup lights, center pin neutral safety switch

 

[65 Dartman]

put power to one of the outside pins; run the wire from the the other outside pin to the backup lights - done

 

[big block]

put power to one of the outside pins; run the wire from the the other outside pin to the backup lights - done

I got that about the outside pins, but both pins show a short to ground. is this normal? I guess I,ll just waste a couple of fuses to find out.
Thanks

 

[65 Dartman]

it sounds like You might have a bad switch