I dont know if the manual has the diagrams i need its kinda hard for me to read them lol. I am gutting everything in the car and have installed everything now except the headunit. I am guessing the yellow wire might be power since it is the thickest but the only wires i know which is which are the speakers wires but that i just got from another thread. I am trying to figure out what wires are acc,power oh and the cable for steering wheel controls of course. Thanks guys.

EDIT: Looked at a different diagram but it had like 10 pictures with 4 diff connectors for each and a table with a color chart but each harness had a red,blue, green etc how do i know which is which? I think there is a separate wire for each function of the steering wheel. Any help would be greatly appreciated.

 

You don't need one.
When you get your wiring harness, it just plugs into the factory connectors and has every wire labeled.

The exception is the steering wheel controls, as they're on another harness that doesn't plug into the radio. On that harness (four wires unless you have nav) you have green and red, which are the steering wheel signal wires, white w/green stripe which is the vss wire, and yellow, which is the reference ground signal for the steering wheel controls.

 

Only harness that came with headunit goes into headunit and comes out with wires that need to be spliced like every headunit ive ever purchased and another harness that uses the inputs for amps. Unless I was supposed to buy but my z110bt didn't come with a harness that connects to any of my factory plugs. How am I supposed to know which of the four plugs has the steering wheel controls I tap into? Or are the colors you said the ones on stock plug not the PAC sw-nis?

 

If you shopped according to the shopping list, you'd have picked up either a 70-7550 (non-bose) or PAC ROEM-NIS2 (Bose):





They go between the z110bt's harness and the factory plugs.

 

Oh the description said retaining factory amplifier so I thought I didn't need that. Gotta get that here quick lol. Oh and how do i tap into speedometer for the gps?Thx

 

On the harness with the steering wheel controls (only four wires in this harness, unless you have navigation) it's the white with green stripe, just splice into it.

 

Oh sweet. Thx. The PAC's description had the color of the wires so I'm just gunna splice the ground power and accessory wires since I don't need old speaker wire.

 

So what cable then in the steering wheel harness is the one for the PAC sw nis? It says White but there is no White in the harness. The other harness has a White.

 

The pac swi harnesses' white wire connects (through the two resistors) to the red and green wires of the factory harness.

 

Oh ok. I'm guessing the yellow is the power for steering wheel?

 

No, it's the reference ground.

 

Oh so then the power to the PAC sw nis gets tapped into the headunit power because u said I could use the wire in the steering wheel harness for the speedometer wire. Are any of the other two harnesses even used when you gut everything? Sorry I'm having trouble with this not used to having steering wheel controls to wire up.

 

Headunit power wire powers the steering wheel interface, grounds get grounded, and the signal wires go to the steering wheel interface adapter's signal input wires. It's pretty simple when you have them and their manuals in front of you and the car apart.