Which hour meter for Air Venturi Compressor?

Im not sure i would want to screw around with the wires because i don't trust myself. I keep a logbook with the compressor at all times and fill it out every time. If you figure out a good timer i can attach without cutting wires please let me know.

On a side note I just did my first oil change at about 7 hours and glad I did. When I drained the old oil it came out with a blue tint. The oil I put in was not blue. Im assuming it was the crappy oil they put in to keep it from rusting so Im glad it has been flushed out. This time I put in a synthetic blend compressor oil and it ran cooler than before. Good luck.