supldys Posted February 22, 2004 Report Share Posted February 22, 2004 what kind of frequency do these things run off of? My standalone has no input for one, so id like to kind of make my own gauge for it. I see jegs has one, but at $140 for a little blinky light, i dont think so. Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted February 23, 2004 Report Share Posted February 23, 2004 I would use a gm knock sensor(for cost reasons) you should be able to run 12v to it amd then run the other side through an led to ground when the engine knocks the sensor will close the circut and the light will blink. heres a quick diagram 12v power->knock sensor(switch)->led light->ground that would be the easiest way might have 20-30 bucks in it. HTH Quote Link to comment Share on other sites More sharing options...
supldys Posted February 25, 2004 Author Report Share Posted February 25, 2004 I am using a GM knock sensor, all my electronics are GM, but theres only one wire, the knock sensor grounds to the block. so would i just put the LED inline between the power and the knock sensor, and then when it gets knock it will ground and light up? or am i confused? Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted February 25, 2004 Report Share Posted February 25, 2004 yes you could put the light at the beginning of the circut to it will work either way power-->light-->knock sensor(switch)-->ground either way the light will glow when the engine knocks and the cicut closes you are just switching the ground instead of the hot that way Quote Link to comment Share on other sites More sharing options...
supldys Posted February 25, 2004 Author Report Share Posted February 25, 2004 cool, thanks mang Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted February 26, 2004 Report Share Posted February 26, 2004 no problemo Quote Link to comment Share on other sites More sharing options...
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