Magnum Hatch Switch Relocation Mod

[SoCalRT]

Rear Hatch Release Relocation


If you are thinking about shaving your wiper arm and hatch handle you can do some of the work yourself and save some money at the body shop. Relocating the hatch release to the license plate recess isn’t very difficult, but it requires some patience and planning to do correctly. Allow for a few hours to do this mod.

Tools Needed:
Phillips Screwdrivers
Small Flat Blade Screwdriver
Single Edge Razor Blade
Wire Cutters
Wire Strippers
Wire Ties
Tape, Masking, Electrical and Friction
Soldering Gun or crimp connections
Shrink Wrap
Heat Gun
10mm Socket
1” Hole Saw
Hacksaw Blade
Flat File
http://i47.photobucket.com/albums/f195/SoCalRT/Tools1.gifhttp://i47.photobucket.com/albums/f195/SoCalRT/Tools2.gif
First remove the lower panel from the hatch by removing the two screws in the hand grip area and giving the panel a few good tugs.
http://i47.photobucket.com/albums/f195/SoCalRT/Panel-Screws.gif
Be careful not to break the two tabs that connect the lower panel to the top panel.
http://i47.photobucket.com/albums/f195/SoCalRT/Panel-Removal.gif
Disconnect the wires for the hatch light from the panel.
http://i47.photobucket.com/albums/f195/SoCalRT/Rear-Panel.gif
http://i47.photobucket.com/albums/f195/SoCalRT/Switch-Screws.gif
Remove the two mounting bolts from the handle assembly and depress the two lower tabs to remove the handle from the hatch.
http://i47.photobucket.com/albums/f195/SoCalRT/Connection.gif
Next disconnect the switch from the wiring harness by sliding the red tab to the edge and inserting a small screwdriver blade into the socket. Then pull the connection apart and remove the handle assembly.
http://i47.photobucket.com/albums/f195/SoCalRT/Switch.gif
To remove the switch from the switch housing, depress the four tabs and it will push through the hole.
http://i47.photobucket.com/albums/f195/SoCalRT/Stripping-Wires.gif
Now strip the tape that wraps the wires in the harness to remove the hatch switch and wiper motor wires.
http://i47.photobucket.com/albums/f195/SoCalRT/Cut-Power.gif
Isolate the power leads for the switch and wiper motor and cut them off and seal the wire ends. The power of the switch will be tied back into the harness at the headliner portion of the harness.
http://i47.photobucket.com/albums/f195/SoCalRT/Top-Panel-Removal.gif
Next remove the top panel by taking out the two screws, one on each side, and giving it a good tug. This is about where my camera battery went dead, so the next few steps you will just need to use your imagination and follow along.

Continue to strip the wire wraps back to the wire connection using the razor. I removed the switch wire from the plug on both sides and continued to strip the wires back into the headliner section. The corrugated rubber piece can be pushed back to allow you to strip them back. Once the switch wire is isolated rewrap the wires with electrical tape and add additional friction tape to locations that come in contact with the body and to reconnect to the mounting tabs. I also added a couple of extra hold-downs that I picked up at Home Depot that use a wire tie to hold a wire bundle.
http://i47.photobucket.com/albums/f195/SoCalRT/Wires-Rewrapped.gif
The hatch wire is highlighted in the headliner area. This is where you will tie back into the power line (thickest black wire) and the switch wire.

http://i47.photobucket.com/albums/f195/SoCalRT/Side-Panel.gif
Continue to wrap the wires and secure to the existing wire bundle. The cylinder on the right is the compressed gas for the side airbags, be careful not to set it off.
http://i47.photobucket.com/albums/f195/SoCalRT/Low-Panel2.gif
You will need to remove the lower side panel. The speaker grill just pops off. Remove the four screws and the 10mm bolt in the side cushion on the read seat nearest the door. Also disconnect the power outlet. Remove the folding floor and the sub-floor panels.

Continued in next post.

[SoCalRT]

http://i47.photobucket.com/albums/f195/SoCalRT/Holes-Marked.gif
Add masking tape to the area that will be the new home of your hatch switch so you don’t scratch the paint and to help location the holes. You will need to drill two 1” holes 2.35” inches apart.
http://i47.photobucket.com/albums/f195/SoCalRT/Hole.gif
Once the holes are drilled out, connect them by cutting the area out with a hacksaw blade and file until the switch will fit in snuggly. The panel thickness is about the same as the hatch handle and is held in place with the four tabs. Don’t push the switch all the way in because you won’t be able to get it back out.
http://i47.photobucket.com/albums/f195/SoCalRT/Grommet.gif
Next you will need to drill a couple of holes for the wires to get from the switch to the wiring harness. Try to drill a hole as close to the switch location a possible, as it will be much easier to pull the wires. I made a hole through one of the access holes in the rear panel brace and another near the corner of the door opening. Use a grommet so the wires do not rub on anything. Use a piece of hard wire to fish the lines through the holes and the brace panel. Connect the wires to the switch with either crimp connection or soldering and wrap with shrink tubing to seal the connection.

At his point you can check the switch operation and put all of the panels back into place.
http://i47.photobucket.com/albums/f195/SoCalRT/New-Switch1.gif
The finished installation looks really clean, but it does now take two hands to open the hatch. I will also be removong the wiper motor the day before it goes in the shop to get the body work. It comes off pretty easily, one nut on the outside and three in the hatch.

Now off to the body shop to get the hatch all nice and smooth.

[PaulFix]

If you have shaved your wiper maybe you could use the wiper switch to open the tailgate. It would require a bit of wiring behind the dash but not that much

[lowriderman3]

^^There is a mod out for the switch to the hatch. Wiring is already there. Just need to mod a trunk switch from a 300 and them mount it up front. There are a couple of threads on it already.

[PaulFix]

I know about the other threads, I have done the mod myself alreadt. It is better to use a charger switch rather than a 300 switch as it is a lot less expensive

[joseph]

If you have shaved your wiper maybe you could use the wiper switch to open the tailgate. It would require a bit of wiring behind the dash but not that much

Good idea, but too much work and trouble for not much of a result, I'll leave it where it is.

[FreebirdSRT]

Thanks for the detailed write up. I am getting ready to shave the rear handle and I also wanted to relocate the hatch release button next to the rear plate light, recessed. Thanks again for posting the how to on this mod.

[JamminWagon]

Unless you get some kind of way to pop the hatch past latch you will just hear a click. Or you will have to put a finger in between the hatch and the rear facia. OR or haha, you use the wiper if you havent taken that off.

I'm using 2 door poppers but the way I have them mounted, when compressed they are warping the plastic panel that covers the latch part that is part of the main body of the car.

[stitchmonkey]

I put exhaust manilfold springs on the hatch lift shock thingy's it lifts the hatch about 1 1/2" less when cold plenty of room to get my fngers in to lift, someone posted a new type shock thingy a while ago that lifts the hatch all the way up. Can't remember when or what the thread was called, I forgot about it till now.

[Arch Stanton]

Great write up. It really came in handy when I did mine. Thanks!

I did mine slightly different though. Instead of stripping the wires all the way back, I stripped just the power wire back to about a foot or so from the hinge where I cut it and taped up the part remaining in the bundle. I then found the same wire (purple with a tan stripe*, IIRC) in the bundle running down the pillar towards the battery area (thanks for the pic):

http://i47.photobucket.com/albums/f195/SoCalRT/Low-Panel2.gif


If you cut that wire and tie into the end that goes down towards the battery, you end up with the same thing. When I did Freebird's yesterday, I didn't strip it back from the connector in the hatch at all, and just tied into the wire in the back pillar and ran a new wire down to the switch location.

The other main thing that I did differently is that I only ran the power wire to the switch. Instead of running the ground wire too, I just tied into one that was already running along the bumper. On Freebird's I just tied it into the ground for the back up light.



* Be careful, there is also a purple with pink wire that runs to the latch. If you cut it by accident you'll drive yourself nuts trying to figure out why it doesn't work... not that I found that out the hard way yesterday or anything.
:doh:

[hackit]

Does any one have the link to the charger switch being used?

And the other link to adding the spring?

Thanks

[BAKBRNR]

Bump, I'm interested in this as well.

[lowriderman3]

Does any one have the link to the charger switch being used?

And the other link to adding the spring?

Thanks
One spring is in the thread belwow.

http://www.lxforums.com/board/showthread.php?t=70127&highlight=hatch+spring

Check the thread below for some info on the switch. I would PM ratman to see if he is still making these.

http://www.lxforums.com/board/showthread.php?t=52126&highlight=hatch+spring

[MAGFX]

Just buy a Charger or 300 trunk switch from the dealer and add a 4700ohm resistor inline with one of the wires to the plug, that is already part of the Magnum wiring harness. Drill a hole in the factory circle on the driver's panel just under the steering wheel.

I could not believe how easy this was. Cheers.:)

[Magnum P.I]

Just buy a Charger or 300 trunk switch from the dealer and add a 4700ohm resistor inline with one of the wires to the plug, that is already part of the Magnum wiring harness. Drill a hole in the factory circle on the driver's panel just under the steering wheel.

I could not believe how easy this was. Cheers.:)

When your done it should look something like this

http://i256.photobucket.com/albums/hh176/big_yute/DSC00117.jpg?t=1225237090

http://i256.photobucket.com/albums/hh176/big_yute/DSC00118.jpg?t=1225237128

:rock::rock:

[MAGFX]

^^^Exactly!

And thanks to SoCalRT on a great writeup.

[BAKBRNR]

Much thanks for the added input!!