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Old May 3, 2007 | 08:56 PM
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Default Tach signal
Just fired my 402 and I have no tach where does the signal came from or any other thoughts on it
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Old May 4, 2007 | 08:39 PM
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99-02 LS1: tach wire is pin #10 on the red PCM connector.
Attached Thumbnails Tach signal-99-02-tach-wire.jpg  
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Old May 4, 2007 | 08:45 PM
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yes its a 2000 but i'm wondering if there is something that would be causing the tach not to work no that I did a motor swap
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Old May 5, 2007 | 06:37 AM
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check for broken wires/blown fuse.......................
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Old May 5, 2007 | 06:59 AM
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What is the voltage comming off the wire ?
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Old May 5, 2007 | 11:51 AM
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is there a seperate fuse for the tach
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Old May 5, 2007 | 12:37 PM
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don't think so since it comes straight off the PCM
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Old May 5, 2007 | 12:38 PM
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do you have 3 connectors over your passenger side fender ?, 2 10 pin and 1 eight pin ?
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Old May 5, 2007 | 01:07 PM
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It's probably also sending out a 4 cylinder signal. If your tach is aftermarket, is it set for that?
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Old May 6, 2007 | 06:10 PM
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It's the factory tach in the car
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