Neutral safety switch?

[asolde]

The old 72 c10 started giving me a click when I went to start it. Then I would jiggle the auto shift selector and it would start. It has been getting worst every time I try to start the truck with it just giving me a click. Battery is good.

I have been doing some searching on here and have try to adjust the neutral safety switch with no help. I put the selector in reverse turn the key on and my reverse light are working however I am able to crank the engine and start it in this position.

So do you think it is the neutral safety switch or the starter selenoid/starter?
If I jumper the purple wires and it cranks and starts dose that mean a bad neutral safety switch?
Do you jumper the purple wires and then jumper the switch what dose that do when you jumper the switch?
Maybe I got two things going on......? a bad starter and or selenoid and a bad neutral safety switch?
Got any ideas on how to trouble shoot this?

[Daddy Brim]

If you connect the purple wires together it should start, and it will start in any gear. If it does start this way I would replace the switch.

[luvbowties]

Originally Posted by asolde

The old 72 c10 started giving me a click when I went to start it. Then I would jiggle the auto shift selector and it would start. It has been getting worst every time I try to start the truck with it just giving me a click. Battery is good.

I have been doing some searching on here and have try to adjust the neutral safety switch with no help. I put the selector in reverse turn the key on and my reverse light are working however I am able to crank the engine and start it in this position.

So do you think it is the neutral safety switch or the starter selenoid/starter?
If I jumper the purple wires and it cranks and starts dose that mean a bad neutral safety switch?
Do you jumper the purple wires and then jumper the switch what dose that do when you jumper the switch?
Maybe I got two things going on......? a bad starter and or selenoid and a bad neutral safety switch?
Got any ideas on how to trouble shoot this?

I'd def. try adjusting the ns sw.--2 bolts iirc--loosen a bit and twist--again iirc--just a bit to adjust. If adjusting cannot solve problem, then it's like Daddy Brim said: time to replace ns switch. **Do NOT leave the 2 purple wires connected, as it's way too dangerous starting(and then taking off) in any gear--that's just a temporary, yet quite effective procedure to ensure the solenoid/starter are good.

HTH,
sam

[TBONE1964]

How tight is your shift linkage? If it is wore out, that will also cause your problem.