So
I think I have an 88 hilux that came with a 3y. Someone has put a 4y in and a g52 gearbox from a 4runner. they also changed the instrument cluster to some sort of 94 hilux. Now as my original ute had a cable speedo but the updated ute has an electronic speedo sensor/vss screwed in and an electronic speedo dash/instrument cluster i had no wiring harness to connect them. found the wiring diagram for the vss and tapped into 12v, ground, and i ran a wire to the back of the speedo in the dash to the screw that says "s" on it. now it is working, however it is showing the wrong speed by about ten klicks an hr at 60 and 20 klicks at 120. im guessing I have the wrong cog in the gearbox for the cluster that is in it. I have 19 plastic cogs on my wheel and I read somewhere that 21 is normal for Toyotas? does anyone know if this is true and what I need to buy.
cheers