Author Topic: 1981 speedo  (Read 1162 times)

aussieta

  • Active Forum Member
  • *
  • Posts: 844
1981 speedo
« on: March 23, 2022, 03:02:08 AM »
i have an opportunity to pick up a 1981 speedo, it has an extra blue 3 pin plug hanging off the back
some tell me this is a digital speedo and requires a speed sensor in the transmission
others tell me it is a suppressor to stabilize the speedo
can anyone confirm what this plug is for
and whether this will work with standard speedo cable
this is to go in my 78 ta
thanks
andrew
1978 Y84 W72 WS6
A Camaro looks like it could kick your ass.
A Trans Am looks like it's coming over to do it

Wallington

  • Oracle Forum Member
  • *
  • Posts: 2454
Re: 1981 speedo
« Reply #1 on: March 23, 2022, 03:13:33 AM »
I couldn't tell you, but probably have a regular 78 speedo if needed.

aussieta

  • Active Forum Member
  • *
  • Posts: 844
Re: 1981 speedo
« Reply #2 on: March 23, 2022, 03:18:51 AM »
thanks, this speedo is only km/h, which is why i am interested
1978 Y84 W72 WS6
A Camaro looks like it could kick your ass.
A Trans Am looks like it's coming over to do it

firebirdparts

  • Jedi Council
  • Oracle Forum Member
  • *
  • Posts: 19504
Re: 1981 speedo
« Reply #3 on: March 23, 2022, 09:39:38 AM »
i have an opportunity to pick up a 1981 speedo, it has an extra blue 3 pin plug hanging off the back
some tell me this is a digital speedo and requires a speed sensor in the transmission
others tell me it is a suppressor to stabilize the speedo
can anyone confirm what this plug is for
and whether this will work with standard speedo cable
this is to go in my 78 ta
thanks
andrew
Other way.  it IS a speed sensor and was used in the computer control era to trigger TC lockup.  If you don't use it for anything, then nobody will know.  The speedometer is mechanical.
I want to be like Paul Kenny when I grow up
Joe Bays
1977 Y82 4-speed (red interior)
1978 Skybird 350
1978 Redbird 305
1979 Redbird 301 4-speed
1992 Lincoln Mark VII LSC/SE (red)
1970 Datsun Pickup
1953 Chevy pickup (converted 4x4)
1988 T-bird Turbo Coupe

aussieta

  • Active Forum Member
  • *
  • Posts: 844
Re: 1981 speedo
« Reply #4 on: March 24, 2022, 12:17:16 AM »


[/quote]
Other way.  it IS a speed sensor and was used in the computer control era to trigger TC lockup.  If you don't use it for anything, then nobody will know.  The speedometer is mechanical.
[/quote]
awesome, thanks for that
1978 Y84 W72 WS6
A Camaro looks like it could kick your ass.
A Trans Am looks like it's coming over to do it

Re: 1981 speedo
« Reply #4 on: March 24, 2022, 12:17:16 AM »