hello,

Need some help to justify to the installer to how he F88ked up the job.

I simply took my 05 G35 to the local shop and wanted him to use my Alpine Sub and amp with stock setup.

Paid him for wires and parts..he advised me that he needs to use a high to low converter. I agreed to that assuming he knew what he was talking about

Aftermath, when i picked up the car and saw that he had spliced into the rear right side speaker and took the audio signal from that to the high low converter.
From the high low converter he used RCA cables into the amp.

So now when I fade the sound only to my front speakers the sub has nothing (which is expected being he only is picking up sound off one speaker). I had a feeling he didn't do the job right.

So I jumped on the forum and found this on DIY:


The next step is to find the Bose amp underneath the trunk coverings on the driver's side. There are two harnesses that are running to the amp. The one you want is the blue harness. Remove that and identify your input wires:

Head Output Rear Right + Blue
Head Output Rear Right - Pink

Head Output Rear Left + Teal
Head Output Rear Left - Purple

Remote Wire Light Blue/ Silver

You need to be able to convert 18 gauge wires to an RCA jack to connect to the amp. One way was to get an RCA jack with a twisted pair of wires that you can cut and then splice. Another option is to get the JL line conversion that I used (pricey - $25, but I couldn't wait for mail-order). Splice them with in-line splicers available at Radio Shack and tape it up with electrical tape. You also want to splice into the Remote Wire for the amp. Although the JL amps have audio sensing power-on capability, it is unreliable (I found out the hard way) and I recommend using a direct remote power-on line.



I am trying to understand if the installer did it the right way or it should have been done the way I found it in the DIY? Please help with this so I can go back to him.

To top it off, I got in my car last night and flicked my lights to Auto and guess what, all the lights inside the car went bye bye...so had to drive 50 miles from work to home without interior light...couldn't even tell how fast/slow I was going....

Please help!!

 

^^ I've seen a few shops do it like that... You can consider it a way of doing it but not the right way...

 

If you have a 2-channel amp, draw both the right and left channels into it, and use mono output options.

You'll still get nothing if you fade only to the front since the factory headunit only sends four channels (front & rear/left & right) to the amp, not 6.

 

^ Not sure if your issue is related to your install, but there's a dimmer dial/switch to the lower left of your steering wheel that controls the brightness of your dash lighting.

My first week of owning my sedan I took her to get detailed. When I flipped on my lights to drive home none of my interior dash lighting was on. Had to pull over and search for the switch to turn back up the brightness to get any lighting.

 

Didn't even notice the blown fuse thing.

Some installers just suck?

 

^ heh

My friend went to crap shop and they used the wrong gauge wire, and it burned his carpet and started smoking. he thought his car caught on fire.

oh man

 

I really don't understand how they can suck so bad. I understand there's some sort of time = money thing when it's a business, but I do this crap in my spare time for free (as in pizza) because I enjoy it.

How can this be your job and you not do it right?

Anyway, back to the OP.

If the owner of the shop did this install, go somewhere else. If some wire-monkey who works for the owner did it, take it back, make the guy who knows what he's doing do it.

Is your amp a single or 2-channel bridged for the sub? If it's a single channel, there's no single sub-channel in the coupe. If it's a 2-channel amp, you can take the signals going to both rear deck 6x9s to create a mono channel, but since there's only four channels sent to the bose amp, you're still not going to get anything out of the sub if you fade to the front of the car. That's a limitation of the factory headunit, not the installer.