no power to head unit?

iMaTThew515 · 11/21/2010, 03:11 AM

im not really sure how it happened but im not getting any power to my cd player or my cigarette lighter, i checked all my fused and even re-wired my cd player but still nothing

Bill · 11/21/2010, 07:06 AM

check the ground

iMaTThew515 · 11/21/2010, 10:41 AM

Quote:

Originally Posted by Bill

check the ground

what am i looking for?

jdmb18hatch · 11/21/2010, 06:12 PM

did you check ALL the fuses? the fuse box under the hood too?

iMaTThew515 · 11/21/2010, 07:11 PM

Quote:

Originally Posted by jdmb18hatch

did you check ALL the fuses? the fuse box under the hood too?

yea inside, under the hood, and the cd players fuse...i have no idea what else it could be

alexbuck205 · 11/23/2010, 12:01 PM

do you have a multimeter? if you do check your voltage to your yellow wire (constant power) that wire should have 12v when the car is completely off and than check your voltage to your red wire (switched power wire) it should have 12v when your key is turned on.. also make sure and check your ground (black wire) hold your negative off your multimeter on the black wire and the power side ofyour multimeter to either your red or yellow wire which ever has power.. if it says 12v it means you have a good ground.. if it reads nothing your ground is bad.

iMaTThew515 · 11/23/2010, 06:55 PM

Quote:

Originally Posted by alexbuck205

do you have a multimeter? if you do check your voltage to your yellow wire (constant power) that wire should have 12v when the car is completely off and than check your voltage to your red wire (switched power wire) it should have 12v when your key is turned on.. also make sure and check your ground (black wire) hold your negative off your multimeter on the black wire and the power side ofyour multimeter to either your red or yellow wire which ever has power.. if it says 12v it means you have a good ground.. if it reads nothing your ground is bad.

so what am i gonna do if i have a bad ground?

jdmb18hatch · 11/23/2010, 09:49 PM

Quote:

Originally Posted by iMaTThew515

so what am i gonna do if i have a bad ground?

If you do happen to have a bad ground, just take your black ground wire from the back of the head unit and attach it to a good, clean spot of metal on the vehicle chassis.

Quote:

Originally Posted by iMaTThew515

even re-wired my cd player but still nothing

how did you rewire the cd player? to ignition harness or fuse box?

Okay, as alexbuck205 said, if you have a multimeter (or worse case a test light) test both your +12v (yellow) and your ignition (red) wire on the back of the head unit. That will be the easiest way to diagnose your issue.

iMaTThew515 · 11/23/2010, 11:34 PM

Quote:

Originally Posted by jdmb18hatch

If you do happen to have a bad ground, just take your black ground wire from the back of the head unit and attach it to a good, clean spot of metal on the vehicle chassis.

how did you rewire the cd player? to ignition harness or fuse box?

Okay, as alexbuck205 said, if you have a multimeter (or worse case a test light) test both your +12v (yellow) and your ignition (red) wire on the back of the head unit. That will be the easiest way to diagnose your issue.

Re-wired to the harness, alright ill give it a try

...this is frustrated the hell outta me

mr2boostin · 01/10/2011, 01:19 PM

just run a wire from the positive side of your battery to your red wire on the back of your cd player ( tuck it nicely and run this threw your fire wall ) next get another wire and run this to your fuse box or ignition from your yellow wire if you want the cd player to keep its memory / your setting for bass etc. after these two steps turn the cd player on and you should be good. If the cd player doesnt turn on after this its your ground find a metal surface that is free of paint and connect the black wire to this. ( dont forget to check all fuses in car and on back of cd player )

iMaTThew515 · 01/10/2011, 04:50 PM

Quote:

Originally Posted by mr2boostin

just run a wire from the positive side of your battery to your red wire on the back of your cd player ( tuck it nicely and run this threw your fire wall ) next get another wire and run this to your fuse box or ignition from your yellow wire if you want the cd player to keep its memory / your setting for bass etc. after these two steps turn the cd player on and you should be good. If the cd player doesnt turn on after this its your ground find a metal surface that is free of paint and connect the black wire to this. ( dont forget to check all fuses in car and on back of cd player )

got this taken care of months ago

thanks for the advise but POST DATES there for a reason

whitsingleslamer · 01/13/2011, 12:33 AM

Ya thats to me for checkin ur fuse cuz u couldnt do it lol

iMaTThew515 · 01/13/2011, 10:43 PM

Quote:

Originally Posted by whitsingleslamer

Ya thats to me for checkin ur fuse cuz u couldnt do it lol

HEY DICK!

THANKS FOR THE HELP

and I checked the wrong one

BootLip · 06/14/2011, 08:39 PM

Always check fuses under the hood as well as inside the car. Sometimes the blown fuse will be labled something that seems like it wouldn't have anything to do with the radio.

11/21/2010, 03:11 AM	#1
iMaTThew515 JDM Knight Join Date: Nov 2009 Location: Oskumwa, IA Posts: 799	no power to head unit? im not really sure how it happened but im not getting any power to my cd player or my cigarette lighter, i checked all my fused and even re-wired my cd player but still nothing

11/21/2010, 07:06 AM	#2
Bill Closing Threads Join Date: Nov 2005 Location: des moines Posts: 2,669	Re: no power to head unit? check the ground __________________ Nothing is true......Everything is permitted

11/23/2010, 12:01 PM	#6
alexbuck205 JDM Knight Join Date: Jun 2010 Location: Indianola Posts: 929	Re: no power to head unit? do you have a multimeter? if you do check your voltage to your yellow wire (constant power) that wire should have 12v when the car is completely off and than check your voltage to your red wire (switched power wire) it should have 12v when your key is turned on.. also make sure and check your ground (black wire) hold your negative off your multimeter on the black wire and the power side ofyour multimeter to either your red or yellow wire which ever has power.. if it says 12v it means you have a good ground.. if it reads nothing your ground is bad. __________________ 92 Mitsubishi Eclipse GSX 410awhp 05 CBR 1000RR REPSOL 07 Acura TL-S

01/10/2011, 01:19 PM	#10
mr2boostin JDM Soldier Join Date: Oct 2009 Location: Ames Posts: 139	Re: no power to head unit? just run a wire from the positive side of your battery to your red wire on the back of your cd player ( tuck it nicely and run this threw your fire wall ) next get another wire and run this to your fuse box or ignition from your yellow wire if you want the cd player to keep its memory / your setting for bass etc. after these two steps turn the cd player on and you should be good. If the cd player doesnt turn on after this its your ground find a metal surface that is free of paint and connect the black wire to this. ( dont forget to check all fuses in car and on back of cd player )

01/13/2011, 12:33 AM	#12
whitsingleslamer JDM Soldier Join Date: Oct 2010 Location: Ottumwa, hr from dsm Posts: 478	Re: no power to head unit? Ya thats to me for checkin ur fuse cuz u couldnt do it lol __________________ 1998 White civic ls swapped sold 1997 ford f150 current 1998 gsr integra current

06/14/2011, 08:39 PM	#14
BootLip JDM Fan Join Date: Apr 2011 Posts: 41	Re: no power to head unit? Always check fuses under the hood as well as inside the car. Sometimes the blown fuse will be labled something that seems like it wouldn't have anything to do with the radio.