Neutral safety switch

[Silver R/T]

Is car supposed to crank in gear or only in neutral/park?

[dodge freak]

From the factory it only cranks in park or neutral. But I am not sure if the old cop cars were like that too. I am to young, 40's to know when they started doing that. Its been a long time at least 50 years.

[8WHEELER]

   With an auto it should only start in N or P, if you start in gear you will have problems.

Dan

[John_Kunkel]

There is a Neutral Safety Switch (NSS) in the transmission that controls the ground for the firewall mounted starter relay, the NSS supplies a ground only in Neutral and Park.

If the starter engages in other gears, the NSS has been bypassed or the shift linkage is amiss.

[Nacho-RT74]

Before 70 NSS are one prong what only drives the ground to Starter relay and close circuit on N or P.

Since 70 they were changed to three prongs , where the outer prongs are the IN and OUT positive to turn on the back up lights.

[8WHEELER]

They started the three prong NSS for the 69 model year. 68 and older had the 1 prong NSS.

[Nacho-RT74]

oh Ok... Nice... I thought the change was on 70... ok... whatever... thats the prongs setup LOL

[8WHEELER]

OK.......... I know they also want $80.00 for a new 1 prong 68 NSS at Laysons     I have not found them anywhere else.
................ 69 and up are cheap LOL.........

Laysons part numbers up to 68'
TL-NS628 Neutral safety switch. Limited quantity.(N.O.S.Chrysler #2586 994)
   62-68 A-Body
   62-68 B-Body 

Dan

[Silver R/T]

mine cranks in any gear

[John_Kunkel]

Make sure the starter relay hasn't been replaced with one from a standard shift car, the standard shift relay has the "G" terminal grounded to the case.

[8WHEELER]

mine cranks in any gear

Make sure your trans still has the one post NSS, if not somebody could easily just put that wire that
goes to the NSS on to any ground and then the car will start and crank in any gear. I have done that
20 some years ago just to fire the engine, I had the 69 NSS switch, so I just grounded the wire to
fire up the car, then got the correct 68 NSS switch the next day.

Day

[mikepmcs]

my GD 3 prong keeps coming off and it's messing with my reverse lights, killin' me!

[John_Kunkel]

When the 3-prong socket gets old and the rubber hardens, they don't stay on very well. New socket/harnesses are available from Year One.

You can reach in the socket with a pair of needle nose pliers and pinch the brass contacts closed a little more to help it hang on.

[mikepmcs]

thanks John,
I don't know if i have needle nose that tiny though.  maybe i'll just squoosh the pins on the NSS.  Got me thinkin though.

Ok sorry to hijack thread, back to our regularly scheduled program.
v/r
Mike