how do i check voltage?

[blimpthepimp 10+ year member]

And what num should i get?

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[xShoWTeKx 10+ year member]

get a DMM put the positive lead to the positive side (battery, amp, etc where ever you are checking) put the negative lead on the negative side (again battery, etc, etc) and set the dmm to DC Volts. If the car is off it should show somewhere around 12.6V, with the car on it should show around 13.8V.

 

[blimpthepimp 10+ year member]

Should i check it whe car is running and bass booming?

 

[xShoWTeKx 10+ year member]

Should i check it whe car is running and bass booming?

yes check it at the amplifier just slide the leads into your power and ground terminals.

 

[blimpthepimp 10+ year member]

The numbers should go up after big 3 install?

 

[Dtrom 10+ year member]

The numbers should go up after big 3 install?

When I did my big3 upgrade, my voltage didn't raise, but it took longer for it to drop.

 

[xShoWTeKx 10+ year member]

yep it should

12.6v and 13.8 are with the system off //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif if you are dropping below 12v with the car on and system playing you need to do something to get the voltage up quick.