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Re: Neutral safety switch
[Re: 451Mopar]
#2476640
04/03/18 06:41 AM
04/03/18 06:41 AM
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Joined: Aug 2007
Posts: 2,356
Kentucky
dfsmopars
OP
top fuel
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OP
top fuel
Joined: Aug 2007
Posts: 2,356
Kentucky
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Is the transmission switch clicking or the relay?
I don't have a '72 wiring diagram. Could the NSS be connected to part of the ignition key buzzer? or other saftey interlock circuit under the dash? You mentioned under the sound is under the dash, and the starter relay I think is in the engine compartment (and is should not click when key is not in the start position anyhow.)
If the switch in the transmission is making a noise, check that there is a gasket between the switch and transmission case. When I got my trans from Keisler the NSS was not working. Installed too deep into the trans because they forgot the washer and it smashed the end of the NSS. Had to replace the damaged switch and install with correct washer for spacing.
The clicking is coming when the relay contacts close everytime the shifter passes through neutral. The relay is mounted just under the lip if the dash next to the glove box. The relay always made the same noise with the automatic trannys that have been in there. As said before, very simple but effective circuit.
‘72 Charger, 5.9 Magnum, Tremec 5 spd., Pro-Touring
‘14 Big Horn, Quad Cab, 4x4, 1500
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Re: Neutral safety switch
[Re: dfsmopars]
#2476677
04/03/18 09:46 AM
04/03/18 09:46 AM
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Joined: Aug 2007
Posts: 6,120
Valencia, España
NachoRT74
master
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master
Joined: Aug 2007
Posts: 6,120
Valencia, España
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Is the transmission switch clicking or the relay?
I don't have a '72 wiring diagram. Could the NSS be connected to part of the ignition key buzzer? or other saftey interlock circuit under the dash? You mentioned under the sound is under the dash, and the starter relay I think is in the engine compartment (and is should not click when key is not in the start position anyhow.)
If the switch in the transmission is making a noise, check that there is a gasket between the switch and transmission case. When I got my trans from Keisler the NSS was not working. Installed too deep into the trans because they forgot the washer and it smashed the end of the NSS. Had to replace the damaged switch and install with correct washer for spacing.
The clicking is coming when the relay contacts close everytime the shifter passes through neutral. The relay is mounted just under the lip if the dash next to the glove box. The relay always made the same noise with the automatic trannys that have been in there. As said before, very simple but effective circuit. ok THAT relay is for the seatbelt warning signal not for starting. Its only function is make to light up the dash seatbelt light at map light insert and make to buzz the buzzer as soon you put the tranny in gear and seatbelts are not fastened. Is deactivated when in P or N, just like the starter relay, hence the reason could be clicking when you pass through N. Never have known this relay could be really audible that loud  
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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Re: Neutral safety switch
[Re: dfsmopars]
#2476840
04/03/18 03:12 PM
04/03/18 03:12 PM
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Joined: Jan 2003
Posts: 26,887
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 26,887
Rio Linda, CA
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The clicking is coming when the relay contacts close everytime the shifter passes through neutral.
Sounds like you're using BAT or IGN1 as a source for the pull-in coil in the relay, if you use IGN2 as the source it will only be energized when the switch is in Start. (Assuming the ign sw. is stock.)
The INTERNET, the MISinformation superhighway
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Re: Neutral safety switch
[Re: John_Kunkel]
#2476947
04/03/18 06:09 PM
04/03/18 06:09 PM
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Joined: Aug 2007
Posts: 2,356
Kentucky
dfsmopars
OP
top fuel
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OP
top fuel
Joined: Aug 2007
Posts: 2,356
Kentucky
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Pictures below. First one clicks with the ignition switch. The second is the one that clicks with the shifter. They are side by side between the glove box and ash tray. All favtorycwiring. All that is plugged into the fuse box is and 8 track tape player in IGN1.
‘72 Charger, 5.9 Magnum, Tremec 5 spd., Pro-Touring
‘14 Big Horn, Quad Cab, 4x4, 1500
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Re: Neutral safety switch
[Re: dfsmopars]
#2476959
04/03/18 06:30 PM
04/03/18 06:30 PM
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Joined: Jan 2003
Posts: 26,887
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 26,887
Rio Linda, CA
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Use a regular ISO relay and use IGN2 or the yellow start wire to power the pull-in coil and you won't have the annoying click with every shift.
The INTERNET, the MISinformation superhighway
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