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Old 07-29-2012, 11:53 AM   #1
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Switched 5V source?

I am installing my aeromotive boost sensor and just need a switched 5v source. I cant find any wiring schematics on any existing sensors to tap into for 5v. Anyone know of a good 5v source?
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Old 07-29-2012, 02:30 PM   #2
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There are two wires in the connector bundle right to the left of the clutch pedal Also in the passenger kick panel there are a few. Get ur multimeter out and you'll find them.
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Old 07-29-2012, 04:22 PM   #3
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Re: Switched 5V source?

Is this what you did? I patched into the 5v going to the tps and it blew the fuse.
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Old 07-29-2012, 06:53 PM   #4
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Re: Switched 5V source?

found a 4.6v and 6.1v nothing 5v.
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Old 07-29-2012, 06:57 PM   #5
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Quote:
Originally Posted by Jukens
found a 4.6v and 6.1v nothing 5v.
Both of those will be fine. I'm sure it will work. Not all 12v sources or any voltage source is always going to be exact. There is tolerance limits. Tap into the 6v source
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Old 01-20-2013, 10:44 AM   #6
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Use the 12 volt battery. This is a basic Ohm's law exercise. If you know the amperage at the load, then all you need is a resistor sized in watts to give you the amperage you need and drop the voltage across the resistor to give you 5V across your load. Basically, the resistor will use 7 volts.
If your 5 volt device needs 1 amp, then resistor has to be rated 5 watts. Double it to keep a safety margin and the resistor has to be rated at 10 watts.
Ohms law is I = E/R where I=amps, E=volts, R=resistance
or, R=E/I so if E=7 and I=1, then R=7 or 7=7/1
Just be sure to locate the resistor where heat won't be a problem.
good luck
Dan
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