can you help me with a big 3 upgrade?
Battery positive (+) to alternator - From the positive terminal on your battery to the alternator positive (+) post
Engine block to chassis ground - From engine block to chasis. This is to strengthen the ground.
Battery ground (-) to chassis ground - From the negative terminal on your battery to your car's chassis.


im not good with this stuff, will throw you money/anything lol. please get back to me//

Not sure what you're looking for but this should be in the proper forum. Electrical for your 05 CTS

What the heck are you trying to do that the factory cabling isn't adequate?

Upgrading a audio system I assume ?

I have to do the same, I just added a JL audio 1000/1, I plan to add a 300/4 as well soon. I get soem voltage drop but the amp still plays, but I wanna beef it up, its east to do, remove one at a time, measure then use 4 guage cord for the "big 3"

:)