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  #21  
Old 03-19-2012, 05:50 PM
rctrooper1 rctrooper1 is offline
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Join Date: Mar 2012
Location: Brownsville, Texas
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ok..can you clarify this?

"C437, you can get 5v and ground from the ECM wiring, and then tap into the signal wire and run it to the PL analog block"

I will have the three wires from C437 connected to the PL analog block?
Green wire will be connected to l2 analog block
Gray wire to 5v on analog block
and black wire to ground on analog block

Is this right?

thanks

jz.
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  #22  
Old 03-28-2012, 09:43 AM
TurboBob TurboBob is offline
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the gray wire is 5v, and I suggest connecting it to the TPS 5v circuit at the ECM

the black wire is ground, and I suggest connecting it to the TPS ground at the ECM.

then connect the green wire to the signal input on the PL analog board.

The reason I suggest connecting to the TPS wiring is that it is a protected circuit in the ECM, if something gets shorted out you won't kill the ECM.

The 5v on the analog board comes right from the ECM's internal circuits and if you short it out you can kill the ECM , PL or both.

Bob
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  #23  
Old 03-28-2012, 10:13 AM
rctrooper1 rctrooper1 is offline
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great! thanks Bob! one more ?, i have a volt boost on the tps. do i get the 5v before the volt boost or after the boost to the tps?
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  #24  
Old 03-28-2012, 10:15 AM
rctrooper1 rctrooper1 is offline
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ok. i just read it again! never mind. havent had my coffee yet. thanks again
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  #25  
Old 03-28-2012, 10:17 AM
TurboBob TurboBob is offline
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going for coffee myself, triple strong....

B
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  #26  
Old 07-28-2012, 07:10 PM
granitestategn granitestategn is offline
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Join Date: May 2004
Location: Southern NH
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Default analog inputs to PL

Hi Bob,

I'm trying to determine what I need to do for the various auxillary analog inputs I'd like to add to the PL logging. I have a type K thermocouple, a fuel pressure sensor and a 3 Bar MAP that will be used with my TPro.

I know I need a converter for the TC and I found them online. They are powered by 12V and have a 0-5 VDC output. Since this will be externally powered, I assume I just connect the signal output wire with the 0-5 VDC positive signal to I3. The 12V plus to battery and the 12V neg to chassis ground.

The fuel pressure sensor is Texas Instruments 5V powered and puts out 0.5-4.5 VDC from 0-110 PSI. I am thinking I should power that from the TPS supply 5V and run the signal wire to I4 or I5. Ground for the 5V neg supply to the ECM ground?

I finally pumped out the old gas and put some fresh gas with a toluene kicker and turned the boost down. No KR today but I didn't have the laptop with me.

TIA!
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