After countless hours of researching on wiring diagram and understanding how the Nissan ignition system works, it was scarce to find any information on our model QX and Armada. The wiring colors were off, there were no explanations on the 2 ignition wires that we had nor why it even has 2 starter wires. The flex relay was confusing even though I have experience with normal bosch type relay. Flex relay is just an internal relay, that's all.
The Viper 5901 is a intricate piece of equipment with a horrible manual. I have researched for days when I had time in-between classes, work, and my family. At first, I couldn't comprehend some of the descriptions in the manual because it was vague and ambiguous.
I have the full service manual and did all most of my research from it so I took the liberty of my research to give it to you and hopefully this will help some of you in the future that want to attempt to proceed with a project like this.
For your record, this installation is for the Viper 5901. I am not responsible for any mishaps you may have during the following of my work. I am ASE certified in Electrical. I am pretty sure that other DEI remote starter are similar for this installation. It should work for 2004-2006 without intelligent key/turn knob.
= Internal relay built into the brain
IG1 and IG2
= one wire provides 12v to fan blower, window circuitry, rear defroster, radio, and other. The other provides power to fuel pump, ignition coils, ecu, and anything other components of the engine. This keeps power interference to a minimum and keeps away frying wires. In the diagram, you will need to use the flex relay.
Starter wire 2
= This is for the reason of anything that needs power while starter is engaged so you don't lose power. For example if you did not hook up this wire, when you turn your keys to start and your seat and steering column is still moving, it will stop at whatever position once you turn to start. It maintains the power to your memory when you turn your keys to start the car. In the diagram, you will need a bosch type relay to engage the starter 2 wire.
I originally bought a Xpresskit XK02 to use as the immobilizer for my vehicle, but realized that it was not an immobilizer. It was just a factory/aftermark alarm controller. I have purchased the Xpresskit DLPK which does not require a key or key ring for our models and should keep the engine running. I will update when I get this part running.
If you find that the colors are different, use the pin instead because the pin location should still be the same. I know I still need to touch up on making my chart prettier, but this is the best I have for you.
Let me know if I should change some if you should find it wrong or confusing.