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Wiring?

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Old 04-05-2009, 02:14 PM
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Default Wiring?
I need help with getting "SES" light wired. Anyone know where I can pick the sinal up from the computer for this light to turn on? Btw, its a 99' LS1 computer/harness. Thanks in advance.
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Old 04-05-2009, 03:44 PM
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PCM RED #37 is the signal output for the SES light.

Here is the link..it says MIL (Malfunction Indication Light), that's the same.

http://performanceworks1.com/1999_pcm_pinout.htm
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Old 04-05-2009, 09:37 PM
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The pcm will be putting out a ground signal to make the light come on when needed.
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Old 04-06-2009, 12:25 AM
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^^Exactly. The PCM puts out a ground signal for just about everything attached to it.
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