Speedometer Gear Calibrator
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by Jmsbond007
Does anyone know how to wire this thing in ??? where do I put it ??? The directions provided are vauge. Thanks for anyones help. 
RACE ON!!!
Drifting
Joined: Jun 2001
Posts: 1,704
Likes: 459
From: Mass Mass
If you have the Abbott Electronics Box, Sold by Zip or Jim Pace, etc.
I just hooked one up to an 1988 automatic and it works just fine.
If you have a different year, not sure this will help.
Two wires going to the VSS at the rear of the trans, purple and yellow. Cut/splice into the yellow wire near the trans.
White wire, from box to the VSS/trans side of the cut yellow wire.
Blue wire, from the box to the ECM/car side of the cut yellow wire.
Switch settings ratio, if you haven't changed the old vss & speedo gears, is your old ratio divided by the new rear ratio.
Example 2.59/3.54 = .732
I mounted mine behind the passenger side dash/crash panel.
Drilled small hole in the floor near the shifter and ran the wires up under the dash.
But I had already replaced the dash pad with a guage panel, so it was easy to get behind it and hook up 12volts.
I just hooked one up to an 1988 automatic and it works just fine.
If you have a different year, not sure this will help.
Two wires going to the VSS at the rear of the trans, purple and yellow. Cut/splice into the yellow wire near the trans.
White wire, from box to the VSS/trans side of the cut yellow wire.
Blue wire, from the box to the ECM/car side of the cut yellow wire.
Switch settings ratio, if you haven't changed the old vss & speedo gears, is your old ratio divided by the new rear ratio.
Example 2.59/3.54 = .732
I mounted mine behind the passenger side dash/crash panel.
Drilled small hole in the floor near the shifter and ran the wires up under the dash.
But I had already replaced the dash pad with a guage panel, so it was easy to get behind it and hook up 12volts.
Thread Starter
3rd Gear
Joined: Apr 2005
Posts: 3
Likes: 0
Sorry about that, here is the link to the item I purchased ....
http://www.abbott-tach.com/era.htm
Well that was a little long. Thanks for the advise so far. Yes it is an Abbott electronic ratio adapter.
http://www.abbott-tach.com/era.htm
Well that was a little long. Thanks for the advise so far. Yes it is an Abbott electronic ratio adapter.
