Anyone ever use the Terf mechanical converter for your speedometer. I swapped a 350 chevy engine into my 89 rx7 but the speedometer doesnt work. So i bought the converter and have NO clue how to hook it up? Has anyone ever used terf and if so could you give me some instructions on how to hook this badboy up?

Thanks

 

You'll probably get more help in the "Other Engine Conversions" section. Moving there...