Big 3 Quick Question...

[budahbuddy803 10+ year member]

I was following some wires today trying to see how difficult my big 3 would be to do. Instead of :

1. alt + to bat +

2. chassis to engine

3. bat- to engine

My car seems to have:

1. alt+ to bat+

2. bat - to chassis

3. bat- to engine

Is this ok? I was just going to get the 2 batt. terminals from knu that hold 2 1ga. and 1 4ga. one for the pos. and one for the neg.... this is perfectly fine right?

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[MmatsDude 10+ year member]

the 3rd one is chassis to engine block

 

[jrwalte 10+ year member]

If you're connecting the amp negative to the chassis, it may help the voltage at your amp to also create an engine block to chassis to give less resistance between the alt and amp.

 

[budahbuddy803 10+ year member]

ok, i just couldnt locate the factory engine to chassis wire so i figured it was done a little differently, but now i understand.

Do all cars have these 3 factory wires, or might i have to create a new spot for my engine to chassis?

 

[headlesskoopa 10+ year member]

check further in da back. All the cars I have seen have it. What kinda car was it. Sorry if u posted it, but its sucks being on a forum on ur iPhone.

 

[budahbuddy803 10+ year member]

haha nah, its a 2000 toyota solara

 

[jrwalte 10+ year member]

It's possible one doesn't exist. Even if one does, you can pick a bolt on your engine block and a bolt/empty spot (to use your own bolt in) on your chassis. Just sand the spots to remove any dirt and paint to give you a good conductivity spot.

 

[budahbuddy803 10+ year member]

i found the engine to chassis ground, there is also a different engine to chassis that i am not sure about...... i might replace 6 wires..... + alt to +bat, - bat to engine, - bat to chassis, engine to chassis x2 is it necessary??

I will do the big three first and then go from there......

 

[jrwalte 10+ year member]

You only need to do 1 block to chassis. Just leave the other factory one. It won't hurt anything.

 

[budahbuddy803 10+ year member]

k thanx

 

[DidUHearThat? 10+ year member]

i might replace 6 wires..... + alt to +bat, - bat to engine, - bat to chassis, engine to chassis x2 is it necessary??.

No. Do not replace any wires. You simply add 3 new ones and leave all the stock wiring alone.