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i have a 03 rsx base, gutted for dirt track racing and i belive that the obd2 runs off the cigerate lighter fuse? please correct if wrong but im to belive i need to reground my obd2 port because it does not read when hooked up to it. please advise and link to a wiring diagram if possible. thanks
 

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DLC:
4 - Ground
5 - Ground (grounds in the ECM/PCM)
7 - K-line communication, runs to E23 in ECM/PCM (with key on should have 8.5 V or more, with key off should not have continuity to ground)
16 - Battery (fuse number 9 "BACK UP" 7.5 A in under-hood fusebox)

101282
 
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