A340 gearbox - which speed sensor should I use?

[1JZ-Rolla]

As my 1JZ corolla conversion nears completion, I need to wire up the A340 auto gearbox to suit.

I am fitting a VDO electronic speedometer to the dash, as the A340 box doesn't use a cable drive for the speedo. Problem I have is that there are two speed sensors on the extension housing of the box, one is a magnetic reluctor type (pictured first below), the other is a digital sensor driven from a conventional gear (pictured second)







Which of these should I use? Is either one better than the other? The VDO gauge can accept either signal.


Cheers
Phil

[sideshow]

u need the top one wired for the auto to change gears properly

the 3 wire one is for the speedo
12v ign
earth
signal to vdo speedo

[mrshin]

Use the three wire one... or mix'n'match bits from extension housings of other autos to make your original speedo work.