Wiring up 2 batts...

[86yota 10+ year member]

I want to add 2 batts to my setup, do I hook them up Pos to Pos and Neg to Neg?

Another quetsion, my trunk latch is broke, how do I get my dang trunk open?

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[fbi90909 5,000+ posts]

yes pos to pos and neg to neg

 

[dan5505 10+ year member]

i dont have a second battery yet but i hear its good to have a battery isolator so the two batteries dont drain each other.

 

[Rawr-DQ 10+ year member]

crow bar

 

[morgans432 10+ year member]

i dont have a second battery yet but i hear its good to have a battery isolator so the two batteries dont drain each other.

thats what i use and it works really well. i would recommend it.

 

[revrider1 5,000+ posts]

get a gun and aim right at the latch then shoot

 

[Anniku989 10+ year member]

A key?

 

[PSturmer 10+ year member]

i dont have a second battery yet but i hear its good to have a battery isolator so the two batteries dont drain each other.

umm, no. you can just connect them together

 

[morgans432 10+ year member]

umm, no. you can just connect them together

I never did it like this I think the isloator is for when you have the car off it wont drain the front battery

 

[revrider1 5,000+ posts]

yes thats what it for

 

[dan5505 10+ year member]

umm, no. you can just connect them together

Ive had a lot of people tell me that they will. This is not to say that it wont work withouth the isolator because i know alot of people do it that way. I think as long as you dont listen to your stereo without the engine running your fine.

 

[mdillon 10+ year member]

isolator is better. you can wang for hours AND start your car to drive home.

 

[86yota 10+ year member]

I actually have an isolater, do I just install it in the power wire coming from the main batt to the main 2nd battery?

 

[morgans432 10+ year member]

you run power wire from the front battery + to one side of the battery isolator. then have another piece from the other side. Have a wire ran from the acc wire and one to the ground in the front or just ground it to the body. 2 big posts for the battery and the other 2 smaller ones for acc and ground. Acc=Acessory.

 

[audioholic 5,000+ posts]

you run power wire from the front battery + to one side of the battery isolator. then have another piece from the other side. Have a wire ran from the acc wire and one to the ground in the front or just ground it to the body. 2 big posts for the battery and the other 2 smaller ones for acc and ground. Acc=Acessory.

You are describing how to wire up a relay, not an isolator. Maybe you guys are all confusing relays and diode based isolators? ngsm13 and I just had a discussion about this last week.
You *can* wire multiple batts together directly, doesn't mean its always the best way to go. For examples... if I had a weak-*** stock batt for the car up front, and a nice new expensive batt exclusively for the stereo in the back, Id prolly run an isolator. If I had 2 nice, new batts, one for under the hood and one for in the back for the stereo... and like to listen to stereo with the engine off alot, Id consider running a relay. If my batts are both approx the same age/condition, I dont listen to the stereo with the engine off much, and I dont want to spend money if I dont need to, id probably just wire the batts together directly.

Way too many threads lately with people over generalizing isolators, relays, etc.. and then recommending one type or the other based on this. Not a difficult topic guys, if you are in the market for dual batts, research relays/isolators/etc.