Question about location of neutral/back up lights switch.

Discussion in 'The "Juice Box"' started by Dan Janes, Jan 22, 2021.

  1. Dan Janes

    Dan Janes Member

    I'm getting close to having the design complete for my True Slap detent plates for the '70-'72 automatic floor shifters for Skylarks, etc.

    I understand the neutral safety switch was on the column for some, and on the shifter for others. I need to know which cars have it on the shifter.

    Thanks for any help.

    Dan
     
  2. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    I believe 68-70 floor shift cars had it on the shifter, 71 and up on the column.
     
    Dan Janes likes this.
  3. Dan Janes

    Dan Janes Member

    Thank you. I've had a guy with a '71 tell me he has the switch on the shifter. Can someone with an assembly manual for '71 and '72 please check this out?

    Dan
     
  4. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    Dan,
    You have to remember that these cars are 50 years old. Lots of parts get swapped in 50 years. So do the cars. Does this guy know the COMPLETE history of his car?

    Here are 2 pictures from the 70 and 71 Chassis manuals, that I clipped from the Shift Linkage section. The 70 is on the left, the 71 on the right. You can see the switch in the 70 diagram.

    7071Shifter.jpg
    70NSSwitch.JPG
     
    Last edited: Jan 26, 2021
  5. Matt Knutson

    Matt Knutson Well-Known Member

    My '70 Flint car has switch on shifter and '71 Flint car has switch on column. Both are original to the respective car. Not sure when the change was made, but, page 1-13.2 shows change. Page approval/ change published 1/20/71, buy my '71 has 12/70 build date.
     
    Dan Janes likes this.
  6. Dan Janes

    Dan Janes Member

    Thank you both for the replies. That is helpful information. I appreciate it.

    I don't know if he has history of the car. I only know it's a '71 with a shifter mounted switch. I hope to talk again with him tonight.

    Dan
     
  7. knucklebusted

    knucklebusted Well-Known Member

    If the plate mounts in the stock location with the two bolts, it shouldn't interfere with the neutral/backup switch. They mount to opposite sides of the shifter. With a 200-4R, I had to modify mine to get the backup, neutral in the right place to work by modding a GN switch with JB Weld.
     
    Dan Janes likes this.
  8. Dan Janes

    Dan Janes Member

    It's not the detent plate that is a concern. It's the offset on the crossbar. There has to be enough clearance to not touch the wiring.

    Dan
     
    Last edited: Feb 6, 2021

Share This Page