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General => General discussion => Topic started by: CJA321 on 10 February 2012, 20:01

Title: how do you wire a car stereo direct to a 12v battery?
Post by: CJA321 on 10 February 2012, 20:01

As per title. Im trying to make a kinda portable boombox for taking to festivals.

Have a car stereo, with no iso so just a 16 pin plug.

Got a bosch battery from a v8 rangerover rated at 800a. What im struggling with is what pins to use, and obv putting 800a direct to the stereo isnt good for it and making a rather pungant burning smell  :cool: :grin:

So what id like to know how to do it properly??? Cheers guys

Title: Re: how do you wire a car stereo direct to a 12v battery?
Post by: LowlifeDubber on 10 February 2012, 20:16

Red and yellow on the positive side
Black on the negative side.

Job done :cool:

Title: Re: how do you wire a car stereo direct to a 12v battery?
Post by: CJA321 on 10 February 2012, 20:19

Yeah id of done that, but have no leads for the the stereo. just the 16 pins in the back, no power lead  :cry:

and what about the amp rating?

Title: Re: how do you wire a car stereo direct to a 12v battery?
Post by: mcgee9t2 on 10 February 2012, 20:22

why not just buy a cheep cd player that can take betteries, i got one for £5 from a second hand shop to use wen we went camping and lasted a good 12 hours off a few of those big circle batteries, alot more easier than carrying around a 12v battery, a car cd player and a few speekers.

i have a feeling youde need to put some fuse or resistor in there, not sure though cause not too clued up on the whole battery-cd player side of things, all  i knew when i put my headunit in is this wire needs to be connected to this haha

Title: Re: how do you wire a car stereo direct to a 12v battery?
Post by: LowlifeDubber on 10 February 2012, 20:25

12v is 12v it doesnt matter on the 800ah that is just the cranking amps provided.You can safely put the headunit onto it.
Regarding which pin to use,you would need to find a manual for the specific spec headunit you have.
Me personally if i had to,would whip the top off and have a look at the pcb to see which 2 pins feed the large coil/cap inside.

Or just buy a cheap cd player and 2 packs of batteries  :grin:

Title: Re: how do you wire a car stereo direct to a 12v battery?
Post by: CJA321 on 10 February 2012, 20:26

Thats not as fun :-P i had all this stuff lying around so thought id try.

The idea is that its on a kinda trolley so can stivk all my beer etc in it allso instead of carrying holdalls.. just to make the trek from car to campsite at festivals easier... saw afew people doing it last year and thought it was a great idea  :smiley:

Title: Re: how do you wire a car stereo direct to a 12v battery?
Post by: CJA321 on 10 February 2012, 20:28

Yeah i had a look at the pcb... went straight into a chipboard  :embarassed:

Title: Re: how do you wire a car stereo direct to a 12v battery?
Post by: danny_p on 10 February 2012, 21:55

chould just googel for the pinout of an ISO plug

Title: Re: how do you wire a car stereo direct to a 12v battery?
Post by: russ-vdub on 11 February 2012, 03:13

^ Yup, or buy one you cheapskate :afro:

Title: Re: how do you wire a car stereo direct to a 12v battery?
Post by: bored_Welsh_lad on 11 February 2012, 18:01

What stereo is it?

Title: Re: how do you wire a car stereo direct to a 12v battery?
Post by: golf-sib on 11 February 2012, 21:24

In my mk4 I have a separate fusebox I bought which is in the sidecover on the dash (passenger side), direct 12v runs to it from batter and I use the metal dash brackets as ground. All wires are on 6.3/6.1mm spade crimps to the fusebox making things nice and simple.

Title: Re: how do you wire a car stereo direct to a 12v battery?
Post by: bored_Welsh_lad on 12 February 2012, 09:47

your missing the point, he doesnt have the cable in the back of the stereo...

Title: Re: how do you wire a car stereo direct to a 12v battery?
Post by: golf-sib on 12 February 2012, 11:32

Quote from: bored_Welsh_lad on 12 February 2012, 09:47

your missing the point, he doesnt have the cable in the back of the stereo...

In that case, buy an iso plug and chop it if need be to your needs?

Title: Re: how do you wire a car stereo direct to a 12v battery?
Post by: CJA321 on 12 February 2012, 12:51

Yeah, iv bought an ISO cable for it.
Working an absolute treat!!

Just concerned about taking a huge 12v battery to a festival now.... Which i hadnt contemplated being a problem... But now i think about it....  :laugh: :rolleyes: