Overview
The Viper 5706V is a 2-way car security and remote start system. This guide assumes a basic installation for alarm functionality (arming/disarming, siren, door triggers, parking lights) with optional remote start considerations. The 2003 Dodge Sprinter is a diesel van, so remote start requires extra care (e.g., glow plug delay), and you’ll need a bypass module like the DEI 556U for the immobilizer if adding remote start. Tools needed include wire strippers, crimpers, a multimeter, electrical tape, and a trim removal tool.
Step 1: Preparation
- Gather Materials: Viper 5706V kit, DEI 556U bypass (if remote start is desired), diodes (for door triggers), soldering iron or crimp connectors, and a wiring diagram for the 2003 Dodge Sprinter.
- Safety First: Disconnect the negative battery terminal on the Sprinter (located under the hood, black cable) to avoid shorts during installation.
- Locate Wiring Points: Most connections will be made at the ignition harness (behind the steering column) and the Central Timer Module (CTM) under the driver’s seat.
Step 2: Identify Dodge Sprinter 2003 Wires
Here’s a breakdown of key wires in the 2003 Dodge Sprinter based on standard wiring data (e.g., the12volt.com). Use a multimeter to verify each wire’s function.
| Function | Wire Color | Location | Polarity |
|---|---|---|---|
| 12V Constant | Red (100A) | Ignition Harness | Positive (+) |
| Starter | Black/Yellow | Ignition Harness | Positive (+) |
| Ignition | Black | Ignition Harness | Positive (+) |
| Second Ignition | Black/Red | Ignition Harness | Positive (+) |
| Accessory | Gray/Dark Green | Ignition Harness | Positive (+) |
| Power Lock | White/Yellow | CTM, Pink Plug, Pin 7 (under driver seat) | Negative (-) |
| Power Unlock | White/Yellow (same wire, pulsed) | CTM, Pink Plug, Pin 7 | Negative (-) |
| Parking Lights | Black/Yellow | Headlight Switch or Fuse Box | Positive (+) |
| Door Trigger (Driver) | Brown | CTM or Driver Door Harness | Negative (-) |
| Door Trigger (Passenger) | Brown/Red | CTM or Passenger Door Harness | Negative (-) |
| Hood Pin (optional) | Install a hood pin switch if not present | Under Hood | Negative (-) |
| Tachometer (for remote start) | Varies (often at glow plug relay) | Engine Bay | AC Signal |
Notes:
- The Sprinter’s door locks use a single negative pulse wire (white/yellow); a short pulse locks, a longer pulse unlocks. Test this with a multimeter.
- Door triggers are negative and may require diode isolation if connecting multiple triggers to one input.
Step 3: Viper 5706V Harness Overview
The Viper 5706V has several harnesses. We’ll focus on the main harness (H1, 6-pin), door lock harness (H2, 3-pin), auxiliary harness (H3, 24-pin), and remote start harness (H4, 10-pin). Here’s a simplified list of key wires (based on typical Viper layouts):
| Harness | Pin | Wire Color | Function |
|---|---|---|---|
| H1/1 | 1 | Red | +12V Constant Input |
| H1/2 | 2 | Black | Ground |
| H1/3 | 3 | Brown | Siren Output (+) |
| H1/5 | 5 | White | Parking Lights Output (+/- selectable) |
| H2/1 | 1 | Blue | Unlock Output (-) |
| H2/3 | 3 | Green | Lock Output (-) |
| H3/5 | 5 | Dark Blue | Status Output (-) 200mA |
| H3/10 | 10 | Blue | Trunk/Instant Trigger Input (-) |
| H3/12 | 12 | Violet/White | Tachometer Input |
| H3/13 | 13 | Black/White | Neutral Safety Input (-) |
| H4/1 | 1 | Purple | Starter Output (+) |
| H4/5 | 5 | Pink | Ignition Output (+) |
| H4/7 | 7 | Orange | Accessory Output (+) |
Notes: Unused wires (e.g., H3/1-4, 6-9, etc.) can be trimmed and taped off unless adding sensors like the DEI 506T (glass break).
Step 4: Wiring Connections
Now, let’s connect the Viper 5706V to the Sprinter.
- Power and Ground (H1 Harness):
- H1/1 Red (+12V Constant): Connect to the Sprinter’s red wire at the ignition harness. Add a 30A fuse inline for safety.
- H1/2 Black (Ground): Attach to a clean, unpainted metal surface near the alarm brain (e.g., a factory ground bolt under the dash).
- Siren (H1 Harness):
- H1/3 Brown (Siren Output): Connect to the positive lead of the Viper siren. Ground the siren’s negative lead to chassis ground. Mount the siren under the hood, away from heat sources.
- Parking Lights (H1 Harness):
- H1/5 White (Parking Lights): Set to positive polarity (via programming or relay if needed). Connect to the Sprinter’s black/yellow wire at the headlight switch or fuse box.
- Door Locks (H2 Harness):
- H2/1 Blue (Unlock -): Connect to the Sprinter’s white/yellow wire at the CTM. This requires a relay if the Viper’s 200mA output isn’t enough (common for negative pulse systems).
- H2/3 Green (Lock -): Also connect to the white/yellow wire via a separate relay. Use a pulse timer or Viper’s built-in programming to differentiate lock (short pulse) and unlock (long pulse).
- Door Triggers (H3 Harness):
- H3/10 Blue (Instant Trigger Input -): Connect to the Sprinter’s brown (driver door) and brown/red (passenger door) wires. Diode-isolate each wire (1N4004 diodes, cathode toward the Viper) to prevent back-feeding.
- Remote Start (H4 Harness, Optional):
- H4/1 Purple (Starter +): Connect to the Sprinter’s black/yellow starter wire.
- H4/5 Pink (Ignition +): Connect to the Sprinter’s black ignition wire.
- H4/7 Orange (Accessory +): Connect to the Sprinter’s gray/dark green accessory wire.
- H3/12 Violet/White (Tach Input): Locate a tach signal (e.g., at the glow plug relay or alternator) and connect. Test with a multimeter for an AC signal.
- Immobilizer Bypass: Install the DEI 556U per its instructions, wrapping the key coil around the ignition cylinder.
- Hood Pin (Optional):
- Install a hood pin switch if not present. Connect to H3/10 Blue (shared with door triggers, diode-isolated).
Step 5: Mounting Components
- Alarm Brain: Mount under the dash, securing with zip ties or screws.
- Antenna: Place high on the windshield near the rearview mirror for best range.
- LED/Valet Switch: Drill holes in the dash for visibility and access.
Step 6: Programming and Testing
- Program the Viper 5706V using the remote and valet switch (refer to the owner’s manual for steps). Set options like tach learning, parking light polarity, and manual transmission mode if applicable (though the Sprinter is likely automatic).
- Test all functions: arm/disarm, door triggers, parking lights, siren, and remote start (if installed). Ensure the immobilizer bypass works.
Step 7: Cleanup
- Secure all wiring with zip ties and tape unused wires. Reconnect the battery and check for errors (e.g., check engine light).
Notes and Tips
- Diesel Considerations: For remote start, program a glow plug delay (5-10 seconds) in the Viper settings to allow the diesel engine to warm up.
- Unused Wires: Trim and insulate unused Viper wires (e.g., H3/1-4, 6-9) to reduce clutter, but keep 2-3 inches in case of future use.
- Troubleshooting: If the alarm doesn’t arm or remote start fails, double-check ground connections and tach signal.
This guide provides a solid starting point. For exact Viper 5706V pinouts or advanced features (e.g., glass break sensor), consult a dealer or online forums like the12volt.com. Let me know if you need clarification on any step!