viper 5704 on 2004 chevrolet express 1500

Aloha, I will be installing a Viper 5704v this weekend and I would like to have my connections looked over to make sure I have a good understanding of what wire goes where. I will be installing the remote start/alarm on a 2004 Chevrolet Express 1500. I have taken my time and researched the product but I do have some questions. I have seen several installs online use SPDT relays but they never really explain why they are using them and where at. Do I need a SPDT relay for my install? If so where at and what is the configuration for it? At the bottom I have listed the harness connections for the Viper 5704v with what I believe is the correct corresponding connection on the Express 1500. If I need relays or diodes somewhere, can someone please note it for me? I will also be using a XK09 XpressKit on D2D mode. Thank you so much Main Harness (H1), 6-pin connector #     Wire Color     Description          Connection H1/1      RED (+)12VDC CONSTANT INPUT     12V Constant (RED / Black) H1/2      BLACK (-) CHASSIS GROUND     Good Ground H1/3      BROWN (+) SIREN OUTPUT     From Siren H1/4      WHITE/ BROWN      PARKING LIGHT ISOLATION WIRE - PIN 87a of onboard relay Not Used H1/5      WHITE PARKING LIGHT OUTPUT     ????? (Is this BROWN / white@BCM or Brown@fuse box under driver seat?) H1/6      ORANGE (-) 500mA GROUND WHEN ARMED OUTPUT        Not Used H2 Harness, 24-pin connector #     Wire Color     Description          Connection H2/1      PINK/WHITE      (-) 200mA IGNITION/FLEX RELAY CONTROL OUTPUT   Not Used H2/2      BLACK/ WHITE      (-) NEUTRAL SAFETY INPUT Ground with toggle switch H2/3      BLUE/WHITE      (-) 200mA 2ND STATUS /REAR DEFOGGER OUTPUT   Not Used H2/4      GREEN/ BLACK      (-) 200mA OEM ALARM DISARM OUTPUT        Not Used H2/5      RED / WHITE      (-) 200mA TRUNK RELEASE OUTPUT Not Used H2/6      GREEN (-) DOOR TRIGGER INPUT (N/C* OR N/O)        Tan, Lt Green, yellow/black @ BCM with diode isolate (Which way should the diode face?) H2/7      BLACK / YELLOW      (-) 200mA DOME LIGHT SUPERVISION OUTPUT        Gray/Black@BCM (Requires a positive connection, do I need a relay to convert from neg to pos?) H2/8      BROWN / BLACK      (-) 200mA HORN HONK OUTPUT Tan@BCM H2/9      DARK BLUE      (-) 200mA STATUS OUTPUT     Not Used H2/10      PINK (-) 200mA IGNITION 1 OUTPUT Not Used H2/11      WHITE/ BLACK      (-) 200mA AUX 3 OUTPUT     Not Used H2/12      VIOLET (+) DOOR TRIGGER INPUT     Not Used H2/13      WHITE/ VIOLET      (-) 200mA AUX 1 OUTPUT     Not Used H2/14      VIOLET/BLACK      (-) 200mA AUX 2 OUTPUT     Not Used H2/15      ORANGE / BLACK      (-) 200mA AUX 4 OUTPUT     Not Used H2/16      BROWN (+) BRAKE SHUTDOWN INPUT White@Brake Pedal H2/17      GREY (-) HOOD PIN INPUT (N/C OR N/O) From Hood Pin H2/18      VIOLET / YELLOW      (-) 200mA STARTER OUTPUT ???? (What goes here?) H2/19      BLUE (-) TRUNK PIN/ INSTANT TRIGGER INPUT (N/C OR N/O) Not Used H2/20      GREY/BLACK      (-) DIESEL WAIT TO START INPUT Not Used H2/21      WHITE/ BLUE      (-) REMOTE START/ TURBO TIMER ACTIVATION INPUT   Not Used H2/22      ORANGE (-) 200mA ACCESSORY OUTPUT Not Used H2/23      VIOLET/WHITE      TACHOMETER INPUT     White or Purple@PCM H2/24      GREEN / WHITE      (-) 200mA OEM ALARM ARM OUTPUT Not Used Remote Start, (H3) 10-pin connector #     Wire Color     Description          Connection H3/1      PINK (+) IGNITION 1 INPUT/OUTPUT Ignition 1 (Pink) H3/2      RED / WHITE      (87) FLEX RELAY +12V INPUT (30A FUSED)        12V Constant (RED / Black) H3/3      ORANGE (+) ACCESSORY OUTPUT     Accessory (Orange) H3/4      VIOLET (+) STARTER OUTPUT (CAR SIDE OF THE STARTER KILL) Starter (Yellow) H3/5      GREEN (+) STARTER INPUT (KEY SIDE OF THE STARTER KILL) Starter (Yellow) H3/6      RED IGNITION 1 +12V INPUT (30A FUSED)        12V Constant (RED / Black) H3/7      PINK/WHITE      (30) FLEX RELAY OUTPUT (car side of ign, acc or starter wire)     Ignition 2 (White) H3/8      PINK/BLACK      (87a) FLEX RELAY INPUT (key side of ign, acc or starter wire)     Not Used H3/9      RED / BLACK      ACCESSORY/STARTER RELAY +12V INPUT (30A FUSED)   12V Constant (RED / Black) H3/10      NC No Connection Door Lock, 3-pin connector #     Wire Color     Description 1      BLUE (-) 500mA UNLOCK OUTPUT     White@BCM 2      EMPTY NOT USED 3      GREEN (-) 500mA LOCK OUTPUT     Light Blue@BCM Mahalo...

H1/5      WHITE  PARKING LIGHT OUTPUT????? (Is this BROWN / white@BCM or Brown@fuse box under driver seat?) You can use either one ( only need one ) but it's easier to set the Viper to (-) and use the BROWN / White wire @ the BCM. H2/6      GREEN  (-) DOOR TRIGGER INPUT (N/C* OR N/O)     Tan, Lt Green, yellow/black @ BCM with diode isolate (Which way should the diode face?) 1N4001 diode, bands away from the Viper ( towards the vehicle ). H2/7 Domelight -       try the install without making this connection. If a Viper Unlock also turns on the interior lights, you're all set. H2/18      VIOLET / YELLOW      (-) 200mA STARTER OUTPUT ???? (What goes here?)     Not used However if you wish to power the Brown ACC2 wire at the ignition harness, you will use a 30/40 Amp SPDT relay and H2/22      ORANGE  (-) 200mA ACCESSORY OUTPUT to control the relay. Make sure the XK09 is flashed with the correct firmware ( PLXR v3.03 ). Soldering is fun!

Kreg, thanks! Your input completed my connections list. I think I will not be using the H2/18 like you first suggested, I don't know why I would otherwise. Hopefully I wont have an issue this weekend when I get started. I also made sure I flashed the XK09 with the correct firmware.Mahalo...

A`ole pilikia and pomaika`i with the install. Soldering is fun!

Question, I also have a 506t audio sensor, how do I connect this with the DEI shock sensor? Do both sensors connect to the same port or do they both connect individually to separate ports? Thanks...Mahalo...

Sorry, not a DEI alarm installer. Hopefully another forum member with Viper alarm experience can help you with that.Soldering is fun!