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OBD1 Injector wiring (Im a little confused)

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Old May 24, 2005 | 07:22 PM
  #1  
Exempt's Avatar
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From: Alexandria, LA, USA
Default OBD1 Injector wiring (Im a little confused)

Ok, I am doing a D15B VTEC swap on my CRX and am converting to OBD1... And im a little bit confused about how to remove the resistor box... I have searched the topic and from what Ive read, to eliminate the resistor box, I just cut off the plug and splice all the wires together (the yellow wire and 4 red ones)...

But my thoughts on this are, the yellow is 12v correct? So if I splice all of them together, everytime the ECU sends the 12v to the yellow wire, would it not send the 12v signal to all 4 injectors if they are all wired like this? Just a little curious cuz I dont want to screw anything up and wire them incorrectly...

Thanks in advance!


Modified by Exempt at 11:18 PM 5/24/2005
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Old May 25, 2005 | 04:10 AM
  #2  
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Default Re: OBD1 Injector wiring (Exempt)

The ECU doesn't send 12v out to the injectors. The injectors ALWAYS have battery voltage whenever the engine's on. The ECU switches the ground side of each injector's circuit.
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