STUDMAN ON THE WIRING DIAGRAM U SENT ME OF THE AUDIO SYSTEM I HAVE QUESTION REGARDING THE AUDIO SIGNALS FOR THE WOOFER. WHAT IS THE DIFFERENCE BETWEEN THE AUDIO SIGNALS SUPPLIED AT TERMAINAL 45. AND THE AMPLIFIED AUDIO SIGNALS AT TERMINAL 44 AND 43. I THOUGHT THE WOOFER HAD ITS OWN AMP.

 

First off, go easy on the caps. MS Word will allow you to change the case if your capslock key is broken. And $10-20 at a local Best Buy/Circuit City will get you a new keyboard.

At the sub:
Terminal 48 is +12v constant power.
Terminal 47 is ground.
Terminal 45 is the sub's remote-turn on for the enclosed amp.
Terminal 44 is the positive signal from the Bose amp.
Terminal 43 is the negative signal from the Bose amp.

The signal only passes through the Bose speaker amp. It is not amplified by the amp. The reasons it passes through the amp are:

1) To make it easier on Nissan to not have to run a seperate cable from the HU to the sub. They just loop it through the speaker amp.

2) To allow the signal to run through the EQs and crossovers. The EQs and crossovers are located inside the speaker amp. The modified signal is then sent (unamplified) to the Bose sub, where it is amplified.

 

could i tap into 44, and 43 instead of putting the pac at the hu

 

I wouldn't. The signal has already been EQ'd and crossovered at that point. If you're gonna tap it back there, tap the rear speaker INPUTS on the BOSE AMP. In the diagrams I sent you, trace the rear speaker lines from the HU to the amp. You can tap those lines at the amp BEFORE they enter the amp.

As for the AOEM-NIS2 and ROEM-NIS2 kits, you have to tap it behind the HU. The kit is specifically made for plug-and-play into the factory harness.

If you're going the SNI-35 route (which is not recommended), then tap between the HU and the Bose amp.