12v regulator

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ainami

Member - Posts: 28

Joined: November 17, 2006

Location: United States

Posted: November 18, 2006 at 9:39 PM / IP Logged

Sarbein, in some cars it is normal that the voltage will drop to 0V when cranking the engine. This is to reserve and give the full power to the starter.

To solve this you have run a wire between the starter input and gps input. So, when you crank the engine, you will "crank" the GPS also. Don't forget the diode in between or you could relay it.

Good Luck

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master5

Silver - Posts: 1,123

Joined: October 10, 2006

Location: United States

Posted: November 19, 2006 at 12:31 PM / IP Logged

If a vehicle dropping to zero volts during crank was "normal" you would have to reset the clock and radio memory every time you started the vehicle. Only connections to the ACCESSORY wire on the ignition harness go to zero volts during crank for the purpose mentioned above...but it is NOT normal for everything to go to zero during crank..well the vehicle would not even start if this happened..how would the ignition coil get 12v?

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1lowgalant

Copper - Posts: 116

Joined: September 15, 2005

Location: United States

Posted: November 19, 2006 at 1:09 PM / IP Logged

master5 is correct. if the entire vehicle is dropping to 0v during crank, you have electrical issues somewhere.

Whatever you do, DO NOT let the white smoke leak out of the wires.....

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electrostatic

Copper - Posts: 154

Joined: January 06, 2006

Location: United States

Posted: November 19, 2006 at 1:26 PM / IP Logged

battery voltage shouldn't drop more than 1.5 volts during cranking. a car battery is almost completely depleted at 10 volts.

Prove your connections, use a meter!

I promise, I'll behave!

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12v regulator

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