mustang big 3

[IDSkoT 5,000+ posts]

i have a 99 gt vert but pretty much looks the same inside the engine... u said i needed one from my engine block to the chassis. is there not one there originally?

I think I saw one... they're usually a small braided wire at the bottom. But, you aren't replacing the wires. You're just adding to them. So, you don't have to worry if there is one. Just add another one.

 

[liljojo4711 10+ year member]

so i can just bolt it anywhere to the engine? are there any correct bolts?

 

[MitchZ 10+ year member]

I have a 1995 Mustang and I just sanded and grounded it in the trunk.

I never have any problems...

This is Kinetik HC2400 and Kicker Zx2500.1

 

[skittlesRgood 10+ year member]

the point of a short ground wire is less resistance. but you have 1/0 wire so you really dont need to worry about that. if you want to see what will perform better with the amp ground just take a DMM, turn it to ohm and measure from one end of the wire to the other. then measure from a bolt in the trunk to a bolt under the hood.

the point of the big 3 is to decrease resistance as well. you dont need to replace any wires. just add the 3 wires and your done. just be sure to disconnect your battery b4 you do any of this! dont worry its not as hard as it seems.

 

[loopkiller 10+ year member]

Like Skittle said, it is much easier than you are making it out to be. The hardest one is from ALT+ to BATT POS+. All of the grounds are up to you to decide where YOU want to put them. You need one wire to go from ANY metal point on the engine to ANY clean metal point on the body. You need one wire to go from ANY clean body point to the BATT NEG-.

Remember, any metal in your car is a NEG- wire. It just so happens that you have many pieces of wire welded together from front to rear in your car since you have no frame rail. Imagine instead of a 1/0 for your POS+ wire from the front batt to your amp, you instead had 10 pieces of junk wire welded together. That is what you are trying to use for your ground.

In DC electronics, electrons flow in a loop. They come down the POS+ wire to your amp, make music, then head back to the front of the car through your ground (NEG-) connection. If that ground connection is not the same resistance of the POS+ wire, you just negated the good values of running the 1/0 for the POS+ connection.

I hope all that make sense.

 

[liljojo4711 10+ year member]

makes a lot of sense thanks for the post

 

[Kil4Thril 10+ year member]

if i wouldn't of got rid of my 96 i'd go take some pics...on the mustang you also need to run a ground from the battery to the trunk...there is no good solid ground in the trunk...the body is very high in resistance...your car is a unibody so only half a frame in front and back....reason for lack of a solid ground....

yeah from your battery to your trunk...any quality and powerful amp needs a good solid ground...a mustang trunk has no good solid ground...very bad grounds

Man, I preached the shit out of this at StangNet and no one listened. Luckily the guys at 'Source did.