I did the Big 3 on my Ford Focus last week:

4gauge from the Alt to the Battery.
4 gauge from Battery to Body.
4 gauge from Engine to Body.

Now I start my car and the Volts are stupid high.

Volt meter reads 15.1

Amp reads 15.1

Car runs great But now im worried about cooking the Alt.

Any advice.

When i crack the System the Volts go up a bit more.

since its pretty cold right now in Toronto, I'm going to guess you checked the voltage while the motor was cold... It will drop down to somewhere around 14 volts once it warms up with the adjacent heat from the engine.

If I remember correctly the ability to conduct electricity is a function of temperature, so your alternator puts out a higher voltage and current when it is cold.

Or something to that effect. Let the engine warm up fully and then check it.

NP

my fathers car starts out at 14.1 v.s cold... when the temp guage starts to move it jumps up to 15.2... and then once the car is nice and warm is reads around 14.6-14.8 depending if seat warmers are on

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What year focus did you do the big three on?? I have an 06. Could you take pictures and post them??

Mike

just for the record, is this an upgraded alt?

I was just wondering, i'm looking for the same results, i'm looking to do the big 3 as well..

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mmmmmm.. bass.

No Its the Stock Alt, But the Orginal wire was a 10G