J30 audio problem

[Naison]

So I was gonna replace my bose radio with aftermarket one, got harness adapter and hooked all of the wires together by the schematic between the harness adapter and the new radio harness,plugged it in after that and nothing.The new radio started but there was no sound at all.After that I tried to put my old one and it didn't work too.I don't know what happend.I measured the wires with ommeter and the two hot wires(the direct 12+,and the one through the ignition) are connected correct.The problem is that when I measure it shows that the rest of the wires are ground and it shouldn't be like that right? I don't know so much about electronics but shoudn't be only one ground in the whole harness. Any suggestions pleaseIt's pretty bad without music in the car

[yodawill2000]

I had a scare when I hooked mine up and after some research I found that the amps on the OEM Bose speakers gets its power from the power antenna wire.Did you hook that one up ??I think I recall mine was the Blue wire from the aftermarket radio.Did you also get the Scosche adapter to lower the gain the the Bose speakers ??

[Naison]

Yes I connected the power antenna cable and about the adapter all I got is the "scosche'74-up nissan car stereo connector" that's what it says on the lable.What do you think the problem is?

[Chillin014]

do you have something like this ?



btw, what year is your j30? and what was wrong with the stock headunit?

[Naison]

Isn't that the antenna adapter? If so I bought a different one from walmart.The CD and the display on the factory radio was bad.Otherwise the radio was still working.

[Chillin014]

yes, just wanted to make sure you had an adaptor to connect the oem antenna to the aftermarket jack. I think the whole system is grounded out through the antenna or something along those lines.

[Naison]

Is this what I need .How do you connect that anyway?

[Chillin014]

yeah something like that. The one I used was actually more like this (same brand).

it connects to your factory harness and then you connect the other end into your aftermarket head unit's harness. It's only necessary if you are using your stock speakers.

[yodawill2000]

I have the exact thing Chillin PostedAfter you install it you crank everything down and start tweaking to your taste.I'm about middle tweet, little more mid, and wide open Bass hehehe
Modified by yodawill2000 at 6:24 PM 8/18/2009

[Naison]

Thank you guys

[SteveTheTech]

So I was gonna replace my bose radio with aftermarket one, got harness adapter and hooked all of the wires together by the schematic between the harness adapter and the new radio harness,plugged it in after that and nothing.The new radio started but there was no sound at all.After that I tried to put my old one and it didn't work too.I don't know what happend.I measured the wires with ommeter and the two hot wires(the direct 12+,and the one through the ignition) are connected correct.The problem is that when I measure it shows that the rest of the wires are ground and it shouldn't be like that right? I don't know so much about electronics but shoudn't be only one ground in the whole harness. Any suggestions pleaseIt's pretty bad without music in the car

I wanted to start from the beginning. Before getting into line modification you need to check the basics. At this point you have probably caused a short small enough to blow a fuse. You need to check all the fuses, sometimes the short in another or problem in the antenna will effect sound output. If you have measure resistance that is actually jumping ahead. You need to check for constant hot on Yellow, key on power on Red. Ideally you should be using something like this ( http://www.amazon.com/70-7550-...BG6B4 ) to match the corrosponding wires on the aftermarket harness. With the Bose system you need to be make sure the amp on signal wire is running through the auto amp signal relay to power up the amplifiers. This is terminal twelve (light green w/ a black tracer) of connector M96 the smaller of the two larger white connectors on the back of the radio

The line input modification boxes you guys posted here are great for some things and that is exactly the product I have been looking for after installing an Alpine version of the cleansweep in an Infiniti that has a noticeable loss in gain but suppurb output. I wonder if this would work without altering a digital output signal from a processor and before the stock bose amp? Sorry to go off topic a little but I have been brainstorming about that for a few days.

[yodawill2000]

You just made my Brain blow up but .. heheThe Scosche adapter works just ducky on the headunit I bought, After tweaking it.

Although I just use a IPOD with it,unless I'm looking for a traffic update on the AM stations.

Yes ,I'm an old fart .. LOL

Talk radio ownz joo. hehe~~Got a teenage and 22 year old kid Son's~~