head unt dims when bass hits

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carguy411

Silver - Posts: 683

Joined: April 02, 2002

Location: United States

Posted: December 04, 2002 at 10:53 PM / IP Logged

ok heres a quick one. i have an alpine cva1003 head unit. now when my system hit nothing else dims(i have a cap on the system) but the green lights on my HU. now should i run the constant 12v right to the battery with like a 10ga fused wire. also hooked up to the 12v behind ther is the indash dvd and 1 or 2 relaysfor the system and the tv bypass. also in a few weeks im adding the xm tuner so that needs 12v as well.

now will going to the battery stop the dimming and will it kill the battery or will it be ok.(its a optima yellow top)

what you guys think

carguy411

Silver - Posts: 683

Joined: April 02, 2002

Location: United States

Posted: December 05, 2002 at 8:33 AM / IP Logged

noone on this knows at all??

please post if you know

thanks you

bberman1

Gold - Posts: 2,314

Joined: March 11, 2002

Location: United States

Posted: December 05, 2002 at 8:54 AM / IP Logged

Are you taking all this power off your stock heads power leads in the dash? If you are then do as you said run a fused power cable from your battery to the memory/ constant of your head unit and hopefully your dimming will stop.

carguy411

Silver - Posts: 683

Joined: April 02, 2002

Location: United States

Posted: December 05, 2002 at 9:53 PM / IP Logged

ok kool thats what im gonna do.

the 10 ga wire is think enought right i think 8 will be overkill?

thanks

bberman1

Gold - Posts: 2,314

Joined: March 11, 2002

Location: United States

Posted: December 05, 2002 at 10:46 PM / IP Logged

Yes the 10 is more will be more than enough just remember to fuse it within 18 inches of the battery

TeeRizo

Member - Posts: 3

Joined: December 08, 2002

Location: United States

Posted: December 08, 2002 at 8:48 PM / IP Logged

The reason why your head unit is dimming when your bass hits is because your factory wiring harness power wire is not large enough. Don't upgrade the memory wire, just run it straight to the battery. For the power wire use 14 ga and run it to your ignition switch. Check for voltage when the Ign switch is in the Acc position. then hook it up to that terminal. Make sure you fuse the wire, for 14 ga use a 10 amp fuse. Depending on the car you have, you may be able to do this with a "switched" wire in the fuse box.

carguy411

Silver - Posts: 683

Joined: April 02, 2002

Location: United States

Posted: December 09, 2002 at 11:15 PM / IP Logged

y wouldnt i upgrade the memory wire and upgrade the ignition wire instead?

i thought it was the other way around???

ricetech

Copper - Posts: 64

Joined: December 10, 2002

Location: United States

Posted: December 10, 2002 at 1:19 AM / IP Logged

the 12 volt memory wire is actually what supplys power to the hu the ign is only to activate the electronic switch in the hu to turn it on. if upgrading the wire doesnt help try running a cap to the hu. hope this helps

GSaquarius

Member - Posts: 9

Joined: December 08, 2002

Location: United States

Posted: December 10, 2002 at 5:47 AM / IP Logged

what kind of vehicle do you drive ? have you tested the resistance to ground ?

MECP 1st Class and Basic

carguy411

Silver - Posts: 683

Joined: April 02, 2002

Location: United States

Posted: December 10, 2002 at 8:17 AM / IP Logged

i have a 2001 nissan xterra. now i didnt test for that.

thats what i thought the constatnt supplys the power

so what wire should i up grade?

thanks

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