Do i have to disconnect battery?

[1200mk 10+ year member]

before a install a hu?

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[iceteebone 5,000+ posts]

no

 

[SPL140.2 5,000+ posts]

yes always disconnect the battery before installing any aftermarket electronic devices.

 

[squeak9798 5,000+ posts]

yes always disconnect the battery before installing any aftermarket electronic devices.

x2

Always disconnect the battery before working on anything electrical in your vehicle. Not doing so leaves you very suspectable to shorting out wires while you are working on the equipment.

 

[iceteebone 5,000+ posts]

just be careful. i've installed about 10-12 headunits in the past year and never once disconnected the battery and never had any problems.

 

[Twocool4u1 10+ year member]

i'd do it just in case. you might screw up your HU or you might shock yourself

 

[Nikuk 5,000+ posts]

News flash: You slip, one time, a 1/2", while holding your deck in one hand, reaching into the dash with the other, clinching a pair of 5" cutters in your teeth.... You will learn to disconnect the negative cable first.

Nick

 

[jrz126 10+ year member]

shock yourself on 12V? you might get a tiny tiny tingle but thats it, not much different than touching a 9V battery.

Just pull your radio fuse, and be careful with the wires.

 

[iceteebone 5,000+ posts]

all you gotta do is wire the harness to your new headunit, then unplug the harness from your stock radio, and plug into the new harness and you are done.

 

[Radar 10+ year member]

Ive done it both ways, but just to be on the safe side disconnect the battery.

 

[bcarpenterfhl 10+ year member]

i wouldnt worry about disconnecting the battery. i've installed many h/us, and never disconnected the battery. A 120 volt shock isnt even that bad (of course it *****, and you should keep yourself from doing it), let alone a 12 volt shock. if you disconnect the battery, then its a b!tch resetting all your clocks n stuff. also, if you plan on doing an install, and keep your stock radio, it will go on lock, and thats a pain in the ass.

 

[Nikuk 5,000+ posts]

all you gotta do is wire the harness to your new headunit, then unplug the harness from your stock radio, and plug into the new harness and you are done.

Ahhh, you guys are using the cute little harnesses & adaptors... thats sweet.

 

[bcarpenterfhl 10+ year member]

Ahhh, you guys are using the cute little harnesses & adaptors... thats sweet.

uhh, its a hell of a lot easier, and cheap to.

 

[JimJ 5,000+ posts]

shock yourself on 12V? you might get a tiny tiny tingle but thats it, not much different than touching a 9V battery.

It's not the voltage, it's the amperage...you short yourself out on a "tiny tiny" 12V system, your car battery is going to try to discharge several hundred amps to ground - with you in the way. See if that feels different than touching a 9V battery //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Nikuk 5,000+ posts]

It's not the voltage, it's the amperage...you short yourself out on a "tiny tiny" 12V system, your car battery is going to try to discharge several hundred amps to ground - with you in the way. See if that feels different than touching a 9V battery //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

I doubt he'll understand that Jack. Good effort though.