avital 5303l and DBALL 2, 2002 Trailblazer

Ok guys I'm new here so please bear with me I do have some knowledge in 12 volt systems. I can install amps speakers subs and head units. I'm trying to install an avital 5303 but I have a few questions

1. When I use the d2d port does that replace the main harness on the alarm as I am going through the bypass.

2. The pictorial says I have 2 accessory wires but the bypass only shows 1 accessory wire which wire do I tap into. Thanks for your help

1. You will still need the proper connections from the Avital to the vehicle.

2. Not sure what pictorial your are referring to

This should get you started:

H1/2, H3, H6, & H8 to Red 12 volts constant
H1 to starter side of cut Yellow wire, H2 to Keyside of cut starter wire
H5 to Pink Ignition 1
H7 to White Ignition 2
H4 to Orange Accessory 1 wire
For your second accessory, Brown (+), you will need a relay to run that from the Orange(-) 200mA wire from the Heavy Gauge relay pack.
Orange(-) 200mA to the 85 pin of relay, 12 Volts constant to 87 and 86 pins, Pin 30 out to your 2nd Accessory wire.
Diode recommended on pins 85 and 86 band to the 86 pin.

Excellent pictorial of relay/diode is in this pictorial by Kreg357.
https://www.the12volt.com/installbay/forum_posts.asp?tid=133810

D2D for the DB-ALL2 shows only one hardwired connection.
Don't be surprised if it does not do the TACH signal and might have to be hard wired to the vehicle.

As always Use a DMM to test and verify all wires prior to making connections.

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Sorry this is the pictorial

https://www.the12volt.com/installbay/forum_posts.asp?tid=130514

Now when I wire the relay the pins that I wire with 12v Co Stanton can I wire them to the same 12v constant wire.

Yes. Should be able to

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Ok last question on the pictures I only see one yellow starter wire. Is there 2 starter wires on each end of the harness or do I put both wires from the remote start on to each end of the same wire