Originally Posted by rouxeny

My big problem now is with wiring. My understanding of the Z's electrical wiring is limited at best. I have the service manual, but I can't make head or tails of most of the wiring diagrams. Specifically, I need to know the following.

- How do I find the car speed wire? What's the best place to get to it?
- Where is the handbrake lead? I assume it's by the handbrake, once the console is off, I hope I can find it.
- Are there easier places to access the backup lamp lead than at the rear lights?
- I need a power lead that is always on. How would I best connect the nav portion of the wire to it? The above three wires have built in splicers, the below wires are just free leads.
- I need the wire which is one with ignition, and again, the same question as above.
- Lastly, how do I identify the lighting wire?

Again, these are pretty basic, dumbass questions, but I'm a pretty basic dumbass when it comes to this kind of stuff.

Any help would be greatly appreciated. I hope we can get this to be the definitive nav installation thread.

Thanks! Andrew