i was looking for a tach for my bike and found some on ebay for "buy it now" $20 with free shipping. or bid on them with sarting bids at .99 cents. search "hour tachometer" and you will see lots of them. easy 2 wire hook up. wrap one wire around the spark plug wire and ground the other. i havent got mine yet but let you know how it works out. does anyone else run a tach? if so what are your highest rpms?