In a message dated 7/16/99 9:46:08 AM Eastern Daylight Time, wagnerl@EARTHLINK.NET writes: << It is not for my car, but for a product to be released at the market. Wagner. >> well if you want it to hook to a speedo cable, there are still many different styles, you'd need to pick one and work it out from there. Most any cruise control manufacture's make sensors that fit inline or at the couplings, if you just need a few to play with probably the cheapest way to get on is from the junkyard, look for pre 85 chevys and Nissan maxima's both have them mounted up near the bulckhead and are easy to get to. The Nissan on is a sine wave generator, the chevy style is a pulsed reed switch, requiring an external power supply