Losing Power
 

When ever i turn my lights on i watch my power go down and when i turn my heater on it goes down even more?? but when i turn everything off it goes back up to normal...any suggestions or known causes for this???

Re: Losing Power
 

Sounds like one of a few problems.

Problem 1: The alternator is weak and is not puting out the correct amperage. Your local parts store can test this.
Problem 2: The battery is bad, not holding a charge and resulting in voltage drop when you use high power accessories.
Problem 3: The battery cables are corroded (could be inside the jacket where it cannot be seen), resulting in high resistance which causes voltage drop.

Re: Losing Power
 

ive checked both the altenator and the battery is brand new.. i will check the wires tho...thanks

Re: Losing Power
 

Test the wires for resistance, but be sure that you disconnect one side first, or you will get a false reading.

Re: Losing Power
 

How far down does the voltage drop? Are you going by the factory gauge or are you using a digital voltmeter? To an extent it's normal for the voltage to drop a bit.

Re: Losing Power
 

i just put brand new wires on and they are good. I am going off of my factory gauges and they go from 13 to below 8

Re: Losing Power
 

Try monitoring the voltage with a DVOM, and see if the gauge is actually reading correct. Also I'd have the alternator tested a couple more times before assuming it's ok. A lot of parts stores don't know how to run their equipment. If you've got a local shop that does starter and alternator rebuilds, they'll probably be a little more proficient at testing the components.