Below is the vehicle specific wiring diagram for a remote start, security system and keyless entry install in a 1999-2004 Honda Odyssey. This information is for guidance purposes only. We recommend that a certified tech install the system. Make sure all connections are good and use necessary tools.

Item Wire Color Polarity Wire Location
12V white Positive (+) ignition harness
Starter black/white Positive (+) ignition harness
Starter 2 none
Ignition black/yellow Positive (+) ignition harness
2nd Ignition yellow Positive (+) ignition harness
3rd Ignition none
Accessory white/black Positive (+) ignition harness
Accessory 2 none
Tachometer blue above the brake master [2]
Power Door (Lock) for
[Negative (-)] Door Lock
black/white Negative (-) green 6-pin plug [1]
Power Door (Unlock) for
[Negative (-)] Door Unlock
green/red Negative (-) green 6-pin plug [1]
Door Trigger black/white Negative (-) domelight on/off switch
Dome Supervision for
[Negative (-)] Dome
lt. green Negative (-) domelight on/off switch
Headlights blue/red Negative (-) steering column
Parklight Positive red/black Positive (+) 10-pin plug [1]
Parklight Negative none
Wipers blue and blue/yellow Negative (-) steering column
Left Front Window
red/blu – red/yel drivers window motor
Right Front Window
blu/wht – blu/yel RF window switch
Left Rear Window
grn/red – grn/yel A LR window switch
Right Rear Window
red/blu – red/yel A RR window switch
Trunk/Hatch Pin tied in with door
Hood Pin yellow/red Negative (-) right of steering column
Trunk/Hatch Release for
[] Trunk/Hatch
Factory Alarm
Factory Alarm
blue Negative (-) DDM in driver door
Horn lt. green/blue Negative (-) steering column
Brake white/black Positive (+) brake pedal switch
Door Motor
white/red green 10-pin plug [1]
Door Motor
lt. green/red green 10-pin plug [1]
Disarm lt. green/red green 14-pin plug [1]
Disarm No Unlock none
Additional Info:
This vehicle has an immobilizer system that needs to be bypassed when adding remote start. [1] The plug is located at the bottom of the fuse box. [2] In a 2-pin test connector. [3] The PCM is located in the center console. The speed sense is located in a 32-pin plug.