Ive searched a few threads about the speedo hook-up(and their was a lot of them) but I could not find a definitive answer. I don't want to fry my speedo by hooking it up incorectly, especially since it is from the Custom Shop.

Im running a carb so I removed the ECM and a whole bunch of wires from under hood. I still have the VSS Buffer box.

So what would the proper signal hook-up be? Is the VSS to ECM hook-up needed? Do I just connect the SIG wire from the Autometer gauge to the BRN/YEL wire(which says it is a 2000 PPM or use the GRN/BLK wire that would have lead to the original cluster(which is 4000 PPM).

Or can I just eleminate the whole buffer box also and go straight from the VSS itself, in which case I do no know what is the High Signal and the Low Signal?


Got some pics for reference

 

 

Im guessing the model # 2650-1266-00. That is the only numbers on the paper it came with.

 

Leave the buffer box in place. The 4000ppm signal from pin C to your old cluster is the generic for nearly every speedo, so hook it directly to the new gauge

 

Thanks