SPEAKER WIRING UPDATE:
awiegel wrote: Randy wrote:
By the way, the Nissan Service Manual wiring color chart is incorrect for the Leaf.
Here are the colors I found:
Front Left (+) Blue / Grey
Front Left (-) Violet
Front Right (+) Red / Grey
Front Right (-) Brown / Grey
Are you sure about that?
If we assume that the original speakers are all made the same, then that wiring combination would put them out of phase based upon the wire locations on the plugs.
Could you double check against your photos?
The discrepancy between observed colors at speakers and colors on wiring diagram, and for that matter wires coming out of head unit, is because Nissan, in an inexplicable act of obfuscation, actually changes the wire colors between the head unit and the speaker
. If you study the wiring diagrams in sufficient detail, what you learn is that the colors and destinations shown for connector # M83 as shown on page AV-183 of the shop manual are indeed correct. For the purpose of hooking up a Bazooka at the head unit (which I just finished this afternoon) you can not follow the speaker colors at the doors.
For the Left Front Speaker output, postive is pin 2 and a blue wire at the head unit, but it changes to a purple wire at a harness plug ( M11 to D22 ) where it uses pins 1 and 2, but they have different colors in the two halves of the harness. The negative signal for that speaker begins at pin 3 on the head unit in a pink wire. It then becomes a blue wire at the same M11/D22 harness plug. So, Blue and Pink becomes Purple and Blue, with the Blue now on the opposite leg from where it started
For the Right Front Speaker output, postive is pin 11 and a green wire at the head unit, but it changes to a red wire (no kidding
) at a harness plug ( M10 to D2 ) where it uses pins 1 and 2, but they once again have different colors in the two halves of the harness. The negative signal for that speaker begins at pin 12 on the head unit in a red wire. It then becomes a brown wire at the same M10/D2 harness plug. On the right side, Green and Red at the head unit become Red and Brown at the door, again, the Red wire is now on the opposite leg from where it started.
EASY BAZOOKA WIRING:
If you use a Bazooka extension harness "FAST-BTAH" and then the Bazooka "FAST-9999 fast-universal harness at the head unit, it all goes together very simply. The single harness runs down one side of the car and has power, switched power and input wiring. I guess Bazooka is not concerned about noise transmission, and I can not detect any unwanted noise in the finished installation ( of course, the Leaf does not have the usual three causes of noise in the sound system: ignition, generator or alternator)
The extension harness plugs into the Bazooka. All you have to do at the back end of the car is attach a ground under the back seat. At the front, the harness plugs directly to the "FAST-9999" universal harness. The universal harness is very nice. Each lead has a positive screw-on wire tap connector, and each lead is labeled as to what it should connect to. Everything you need to attach is right at the #M83 plug on the back of the heat unit, even switched power ( pin #7 blue wire) and a heavier guage hot lead ( pin #19, heavier brown wire)
The whole installation went smoothly and the system works beautifully. I did some experimenting with location and direction of the Bazooka and discovered that the manufacturers suggested location, in the right rear corner pointed at the hatch 4 inches away, sounds way better than strapped to the back of the seat or several other positions I tried. Guess they know what they are doing
I am enjoying the sound very much with 4 of the CDTAudio Speakers and the Bazooka. I am still thinking about new pillar tweeters though, with only midrange in the front doors.