Ford racing speed recalibrator

it is a ford racing recalibrator and it has a set of dipswitches to adjust speed and it has multiple jumpers that can be adjusted to run of ac signals or dc signals I just dont know which signal my car puts out. I have a 2002 gt 5 speed
 
I just installed mine the other week. The instructions said that the jumpers were already set up for the signal our vss is. Just leave it alone and worry about the bottom switches.

If you don't know how to set the switches here goes, take the gear you started with and then divide by the new gear ratio and then multiply by 100 and you get your %. Then set your switches like the diagram in the instructions and you're all set.