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Old 07-25-2009, 08:36 PM   #1
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Default Closest 5v source to the ecu

I fried my first map sensor by hooking it up to a 12v source. Now i cant find a 5v source to solder into.
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Old 07-25-2009, 09:07 PM   #2
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Don't know about the na's, but all of us adaptronic users are tapping into the tps for a 5v source and ground.
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Old 07-25-2009, 09:19 PM   #3
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You're running an external MAP sensor with a MSPnP?

Closest +5 to the ECU is inside the ECU. Vref.
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Old 07-25-2009, 09:22 PM   #4
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There is a wire on the ecu... 1n I believe. 5th one in from the outside on the bottom row of the smaller connector.
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Old 07-25-2009, 09:31 PM   #5
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1n gives me battery voltage... Dont want to waste another 50

Can i hook up to any source that is lower than 5v? say 1.010v or .853v? As long as its no higher than 5 i should be okay right?
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Old 07-25-2009, 11:02 PM   #6
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anyone?
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Old 07-25-2009, 11:59 PM   #7
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has to be 5 volt
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Old 07-26-2009, 12:13 AM   #8
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Can anyone show me exactly what wire they tapped into? I found a wire that was 5v i thought but once i soldered and turned on the car it read battery voltage, I shut it off within 2 seconds of giving it power.
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Old 07-26-2009, 12:19 AM   #9
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Look at the MegaSquirt PnP Manual under the section on adding a variable TPS.

Note that there is a pad on the daughterboard called "5V Vref". This is the fused +5 supply that you'd normally use to power a variable TPS. You can connect this pad to an unused pin on the middle connector and then access it externally. The pinout of the center connector is listed in section two of the instructions.

Now tell us what you're doing with an external MAP sensor on an MSPnP.
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Old 07-26-2009, 12:35 AM   #10
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2.5 bar on the MSpnp. 3bar on the WI kit.
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Old 07-26-2009, 12:44 AM   #11
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The WI kit does not include a +5 source to power the MAP sensor? Which kit are you using? If it's the DO progressive controller, the grey wire is a 5v output.
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Old 07-26-2009, 12:49 AM   #12
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wow. ima idiot

Thank you Joe.
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