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knock sensor


supldys

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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

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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?

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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

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