I am trying to setup the speedo for my sprint re in my repu so my iq3 can read it. I have the 3rd gen rx7 tranny in it so Im assuming I need to convert the signal with a dakota digital speedo box. Has anyone done this? Thanks.

 

I've done it with the Haltech RA10. Works great.

Search on the Haltech forum. Eveidently there is a square wave circuit in already available, no adapter required. Not sure on the specifics, it might be part of the cluster.