DVD-Navi Mod for 2005 Honda Odyssey

These instructions allow you to modify your 2005 Honda Odyssey Navi and DVD to view DVDs on the Nav display. The theory behind this mod comes from Ryu's thread Video on navi with reverse camera kit. I used a relay to choose whether the rearview camera or the DVD signal (both are composite video) is sent to the Nav unit, which converts the signal to RGB and sends it to the Nav Display. I used a switch to energize the relay and to trick the Nav unit into thinking the van's in reverse to display the backup camera input.

You'll need to access connectors for two components: the DVD player in the lower dash and the Nav unit under the driver's seat.

If you have access to the Helm shop manual, the following pages are helpful:Nav unit connectors: 23-76, 23-77, 23-83Nav unit removal: 23-121DVD player connectors: 23-131DVD player removal: 23-162, 20-129

I built a small circuit board in a project box from Radio Shack. See my webpage for the circuit and supplies. Please note, I am not an EE--my circuit might not be pretty, but it works! You should end up with a black box with 9 wires hanging out. It helps to label the wires so you know where they connect: 1. DVD signal--from player 2. DVD ground--from player 3. Camera signal--input to Nav 4. Camera ground--input to Nav 5. Camera signal--from camera 6. Camera ground--from camera 7. +12v ACC--to switch 8. Ground 9. Backup signal--+12v in reverse 10. +12v ACC (this wire is not on the black box…it goes from the DVD player harness to the dash switch)

I mounted the rocker switch in a blank switch cover near the VSA button. Drill a ¾” hole for the switch. (I used a rotary tool to remove most of the blank’s support structure before drilling the hole.) The switch fit tightly enough that I didn’t need to use the nut to secure it. Remove the driver’s door sill trim and kick panel by pulling to release the snaps. Unsnap and remove the following trim on the lower part of the driver’s seat: the left front riser cover, the rear riser cover, and the outer riser cover.

With your black box near the driver’s seat, run wires 1 & 2 under the carpet, to the door sill, up the kick panel area, under the dash and over to the center dash near the DVD player. Run wire 8 under the carpet, to the door sill, and to the kick panel area. Using a crimp-on ring lug, attach the wire to a bolt holding the fuel door handle. Run wire 7 under the carpet, to the door sill, up the kick panel area, and to the rocker switch on the dash.

To remove the DVD player, first remove the lower dash cover as follows: on the driver’s heater lower cover, carefully pry out the round trim clip, and pull the cover toward the driver’s side to release another snap-on clip near the bottom. Then pull the cover rearward with a wiggling motion to remove it from a slide-on stud. Repeat on the passenger’s side. Pull open the cupholder drawer and remove 2 phillips screws below the drawer. Remove another phillips screw on each side of the lower dash cover. Now pull the cover rearward to release 4 snap-on clips and move the cover out of the way. (You may need to remove the connectors for the seat heaters and sockets.) Remove four 10mm bolts securing the DVD player. Remove the 22-pin connector from the back of the player. Tap wires 1 & 2 into the BLU and PNK wires on the connector. Tap wire 10 into the YEL/RED wire on the same connector and run the wire under the dash to the rocker switch on the dash. Secure all wires with wire ties.

To remove the Nav unit, move the driver’s seat all the way up and back. Remove two 10mm nuts to remove the kick protector rod in front of the Nav unit. Remove four more 10mm nuts securing the Nav unit to its bracket and slide it forward. Disconnect the five connectors from the back of the Nav unit. Locate the 7-pin connector and cut the BLK and YEL wires leaving at least an inch of wire accessible--you will need to remove tape from the wire loom to have enough wire to work with. Tap wires 3 & 4 into the wires leading to the Nav unit connector. Tap wires 5 & 6 into the wires leading back into the wire loom. Locate the 8-pin connector and cut the GRN wire--again, remove tape as needed to get enough wire to work with. Tap wire 9 into the wire leading to the connector. Noting the correct polarity, connect the diode to the other end of the cut GRN wire and tap it into wire 9.

Your connections are complete—easy, huh? Test it before putting everything back together: replug the DVD and Nav unit connectors. Make sure your rocker switch is off. Turn the ignition key to run. After the nav system initializes, shift into reverse to make sure the backup camera still works. Shift back to park, and turn the key to ACC. Start a DVD and make sure it’s displaying on the flip-down display. Now, flip your new rocker switch. You should see the DVD on the Nav display. If your mod doesn’t work as described, re-check all your connections. Note, when the DVD is playing on the Nav, you won’t see the back camera until you turn the rocker switch off. Now put everything back together and go impress your family and friends with your technical wizadry, all for below $40 and less than a day’s effort.

DPDT relay

NO

NC

COMM

COIL

SPDT relay

NO

NC

COMMCOIL

Diode (quenching)

Nav unit (back)

Backup camera connector (7-pin)

connector (8-pin)

* Nav display connector (20-pin)

* Nav display connector (14-pin)

* GPS antenna connector (14-pin)

DVD player (back)

Backup cameraCam Sig-Gnd

Cam Sig

Cut BLK and YEL wires just short of 7-pin connector

Cut GRN wire just short of 8-pin connector

Diode

Backup signal (+12v in reverse)

DVD connector (22-pin)

* Digital audio connector (2-pin)

DVD Sig-Gnd

DVD Sig

Tap BLU and PNK wires just short of 22-pin connector

2

1

34

56

7

8

Power (+12v accessory)

Circuit board-project box

9

RES display

Tap YEL/RED wire just short of 22-pin connector

SPST switch (on dash)

10

8 3 ft

9 18 in

10 5 ft

Notes:

Yellow indicates connectors used

* Connector not used in mod

Red circles indicate T-Tap connectors

Approx. wire lengths

1&2 8 ft

3&4 18 in

5&6 18 in

7 5 ft Hibbidiji’s custom circuit board

Supplies

 

Radio Shack Number Price

Project Box 270-283 3.99

DPDT relay 275-249 5.29

SPDT relay 275-248 4.29

SPST rocker switch 275-693 2.69

1-Amp Diodes 2761103 0.79

 

I also had to pick up the following because I was in short supply—you may already have this stuff lying around:

 

Radio Shack Item Number Price

35’ 2-cond wire 278-857 3.99

Heat-Shrink Tubing 278-1627 2.39

 

NAPA Auto Parts Price

T-Tap connectors (18-22 ga) 1.99/box of 6 (needed 2 boxes)

Male spade connectors (18-22 ga) 1.99/box of 10?

 

Lowe’s Price

¾” metal hole saw drill bit ~5.00? (to drill hole to mount rocker switch)

 

In total, I spent about $35+tax for supplies.

T-Tap connectors

Wires & relays soldered into place

I used a zip tie for strain relief

Use a rotary tool to remove this stuff before

drilling the hole

Rocker switch mounted in blank dash location

Pull forward to remove front cover

Next, pull backward to remove back cover

Finally, pull out to remove side cover

Wires for DVD signal, ground, and +12v from

rocker switch—under carpet and over to door sill

Wires for DVD signal, ground, and +12v from

rocker switch

Wires for DVD signal—up along kick panel, then under dash behind

pedals; secure with zip ties

Wires routed further and secured

To DVD

Use a small screwdriver to carefully pry out this

fastener

Remove this screw and one on the other side

Remove four bolts and lower DVD player

Unsnap connector securing wire

harness and move cover out of way

Continue routing wires toward DVD harness

Use T-Taps on three harness wires--DVD signal, DVD

ground, and +12v

Location of 7-pin connector

Back of the Nav unit with all harnesses removed

Location of 8-pin connector

8-pin connector and tap into GRN wire for backup signal

7-pin connector BLK & YEL wires from b/u camera--cut and tapped to provide selectable input

Reconnected Nav harnesses and used wire looms to protect new wires