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5v source

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Old Nov 4, 2008 | 09:40 PM
  #11  
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let me know what sensor you want to splice into and i can tell you what color wire and pin #. on the map and the tp i believe the gray wire is the 5v reference.
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Old Nov 4, 2008 | 09:44 PM
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probably the map sensor ill try the gray
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Old Nov 4, 2008 | 09:47 PM
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Originally Posted by PSM
probably the map sensor ill try the gray
thats it. the black wire is the ground.
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Old Nov 8, 2008 | 07:24 PM
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Would splicing in and putting those two sensors off the gm 5v mess up the signal. I dunno if the added load of two more sensors would make the pcm not be able to keep that voltage at 5
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Old Nov 8, 2008 | 07:41 PM
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Originally Posted by PSM
Would splicing in and putting those two sensors off the gm 5v mess up the signal. I dunno if the added load of two more sensors would make the pcm not be able to keep that voltage at 5
it should be fine. if you are worried here is a link to a 5v power supply.

http://www.aeroforcetech.com/sensor.html
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Old Nov 9, 2008 | 02:36 AM
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Pn the map sensor i have grey, orange, and green.. any idea which one of those is ground. I'd test the truck, but its still not close to being back together yet
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Old Nov 9, 2008 | 07:27 AM
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I'm pretty sure the green is the wire that varies because that is the one i tapped into on my TPS for WOT nitrous activation, so i don't think that's the one you want.
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Old Nov 9, 2008 | 08:07 AM
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the orange is the low reference (ground) that comes from the ecm. in the harness i would pick one of the black ground wires and use it.
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Old Nov 9, 2008 | 09:49 AM
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wouldn't I want to use the same ground wire the sensors use since that is what the ecu is using as reference to give 5v off of?
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Old Nov 9, 2008 | 09:52 AM
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Originally Posted by budhayes3
I believe that 03's don't have EGR, I thought that they did away with it in 02...at least on the 1500's...
Yep, But I'm pretty sure you can still use the pin from the pcm ...
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