No Sound From Aftermarket Head Unit

[Jimmmy1985]

Hi Guys,

Have a strange issue after installing a new pioneer head unit. After getting it all hooked up there is no sound from the speakers and there seems to be very low sounds coming from the head unit itself that can be adjusted with the volume control. Also when the unit turns off the ICC screen flashes off then off again really fast ( premium ICC and sound ). The unit has power and seems fine besides the issues.

The install was as follows:

-Power taken from phone connection plug under fuse box (yellow wire)

-ACC taken from lighter socket (blue wire)

-Ground was also taken from lighter socket (black wire)

-Front right speaker was taken from drivers side kick panel ( Grey/Black - | Grey/Green +)
-All other speakers taken from passenger kick panel (Orange/Black - | Orange/Green +)( Blue/Black - | Blue/Red +)( Pink/Black - | Pink/Green +)

-Rear Standard sub is disconnected if that matters

Every connection is soldered and heat shrinked. Speakers are aftermarket but were working fine on the ICC before this.

The sounds coming from the head unit almost sound like the song that is playing but sound like high pitch squeaking noises but not very loud.

I have done many stereos in the past and have never had anything like this before.

Any Ideas???

Cheers Jimmy

[351Dave23]

Did u cut the OEM speaker wires and only connect to the speakers ? ... ie: remove the ICC connection to the speakers.

Sent from my SM-N9007 using Tapatalk

[Jimmmy1985]

So I cut into the speakers at the kick panels and joined new cable from there to the new head unit.

[Jimmmy1985]

I think I get what your saying. I've probably hooked the cables the wrong way..... Man do I feel stupid.

[xr6tForMe]

You need to work out where the problem lies.

Try connecting the speaker output from a different source (eg a home sound system) to the wiring you are using for the car speakers to make sure you have the right connections to make the car speakers work. Also try other speakers connected directly to the outputs from the car head unit to make sure it will run speakers.

Are you connecting the speakers to a signal output rather than an amplified output from the head unit?

Edited 24/11/14 03:07 AM by xr6tForMe

[Lennox]

Id be checking that phone connection fuse, I'd hazard a guess that a headunit is drawing too much current from it..

Wiring is probably stuffed also.. It's tricky to tap into those tiny little cables

Edited 24/11/14 03:36 AM by Lennox

[Lennox]

Sorry didn't read that the unit has power.. Can't be fuse then

[hawlass]

Do a bit of a search to check which end of the wire factory speaker wires you cut is the source end and which goes to the speakers.

When I did my speakers I seem to recall the front speaker wires went opposite to what you would think they would. ( top of the wires went to speakers and the bottom went to the source from memory)

You may be pushing the new head units signal up the ICC's speaker outputs!

[barnz]

Get a AA battery, tap your pairs across it and the speaker will make a little pop when you have got it right. Bit safer than external sources and guessing

[hawlass]

And you can use that trick to detirmine polarity too, if the speaker cone moves out towards you, then you have the polarity right, but if it goes inwards you have it back to front.