Stereo looses sound when starting engine !

[agentsmith350 10+ year member]

Hi ,//content.invisioncic.com/y282845/emoticons/*******.gif.a649d21efc0d1fd4890a6428166586c1.gif

Just installed a double din and now whenever i start the car its 90% of the time got no sound ! , works perfectly well first to turns of the key but as soon as i start the car sound goes , can take the key out , put it back in and turn to the point of starting the engine and sounds fine again , until i start it and arrghhh //content.invisioncic.com/y282845/emoticons/rage.gif.0ad8a6e5565b5fddce406566fdd05149.gif

Iv had it all out 3 times and checked all earths ,RCA Leads ect and still cant fathom it out , iv now broken the parking camera i got the double din for in the first place and cut by hands to ribbons

Someone please help //content.invisioncic.com/y282845/emoticons/*******.gif.a649d21efc0d1fd4890a6428166586c1.gif !

Click to read more...

 

[All_Logix 10+ year member]

Give us a full rundown of your setup and we can better help you, also do you have any kind of DMM?

 

[agentsmith350 10+ year member]

Give us a full rundown of your setup and we can better help you, also do you have any kind of DMM?

Car : Nissan 350Z with Bose system

Headunit : Meos 702b

ICT 350z bose specific Adapter

Not sure what else to post , or what a DMM is sorry ?

 

[Imtjnotu 5,000+ posts]

so while the car is on there is no sound out of the stereo?

 

[agentsmith350 10+ year member]

so while the car is on there is no sound out of the stereo?

Thats correct , sometimes like 10% of the time it works ok doing nothing different and it works fine all the time on the first 2 clicks of the key ( just before starting the car )

Its driving me nuts since everytime i think of something such as amp wires or ground i dont understand why it would work at all if that was the reason

 

[All_Logix 10+ year member]

...Any chance you accidentally hooked the factory amp turn on wire into the acc for the headunit...I mean dont know why this would make a difference, but its already strange so....its VERY possible the bose adapter is having lemon issues because it sounds like your factory BOSE amp is not always turning on

 

[IonRL205 10+ year member]

A DMM is a digital multimeter. Walmart sells them for like $10, highly recommended to get one of these. You can check voltages and whatnot with it, speaker ohms...etc.

 

[agentsmith350 10+ year member]

...Any chance you accidentally hooked the factory amp turn on wire into the acc for the headunit...I mean dont know why this would make a difference, but its already strange so....its VERY possible the bose adapter is having lemon issues because it sounds like your factory BOSE amp is not always turning on

Hmm possibly , Thought about that and again it puzzled me as to why it would work at all if this is the case , I followed this for the wiring , its the same as i have :

The Nissan 350Z & 370Z Owners Club • View topic - How to Connect the ICT/InCarTec Bose Loom

A DMM is a digital multimeter. Walmart sells them for like $10, highly recommended to get one of these. You can check voltages and whatnot with it, speaker ohms...etc.

Ah right , I have one of those and a non digital one ready

 

[All_Logix 10+ year member]

did you connect the black/white wire to ground?

 

[agentsmith350 10+ year member]

did you connect the black/white wire to ground?

letter "H" on that pic ? Yep , connected that to the ground wire of the headunits loom and then a cable from that to a ground point.

I thought about grounding them both separatly but then why would it work at all ( i.e before the engine is started )

 

[All_Logix 10+ year member]

Honestly bud, kind sounds like your going to have to start metering stuff with the engine started and when its in ign to isolate a problem

 

[agentsmith350 10+ year member]

Honestly bud, kind sounds like your going to have to start metering stuff with the engine started and when its in ign to isolate a problem

//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif spent my whole weekend on it and its a real pain in the *** to get it out each time , Someone on the Z Forum mentioned this , does it sound like it could be the issue ?

"the Z uses a remote powered amp, that the HU gets a severe spike (low then high) of power which is causing the problem"

 

[matt_bennett05 10+ year member]

Sounds like you might have to bypass wiring by running your own wiring. I've done it many times...

 

[agentsmith350 10+ year member]

Sounds like you might have to bypass wiring by running your own wiring. I've done it many times...

Actually worked this morning all the way to work then when i turned the car off and on no sound !

I could maybe bypass the power wiring and run it to the battery or run both power wires to the perm live on a switch so its not on all the time but not sure on the amp's power since its built in. Shouldnt have to go through all this though surely

The things i can think of but cant see why it would sometimes work are :

Need seperate ground for the amp power and the head units loom rather than run them both from the same wire ?

Amp power wired wrong , Currently going from Amp cable on headunit to amp wire on ICT adapter , maybe i could run this to the ignition live instead ?

Power Spiking ?

 

[matt_bennett05 10+ year member]

I recommend upgrading your headunits ground wire at least anyway since you put in a stronger, more demanding power source over factory.