Stand-alone knock sensor?

[Matt@RFR]

I need to put a knock sensor on a motor that has no computer. All it will do is activate a light on the dashboard. Anybody know what sensor would be best? Is there a universal unit, or do I have to order one for some random car and adapt it? Are there different (adjustable?) sensitivity specs?



The engine dyno I used to work with had what I'm talking about...just a porcelin looking thing that bolted basically anywhere on the motor, and it activated a 12v light in the booth. We usually bolted it to the manifold using a manifold bolt.