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Instructions for the Courtesy Switch Replacement
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updated January 2006
Lets get started

The DeLorean uses three pushbutton type switches to operate its Courtesy Lamps and also the key buzzer. The replacement module will accommodate only the courtesy lamp functions. To maintain the operation of the key buzzer function you will leave that switch in place. The replacement kit will use the same #12 fuse circuit to power the solid state circuitry and also the lamps. All changes made to the car are reversible with little effort.

 

How the kit works:

 

The kit will use the same #12 electrical circuit by tapping into it at the glove box using a saddle splice. The supply wire will be routed into the switch box which will toggle the electricity to the sensors and solid state circuitry which now will control the switching of the courtesy lamps.

 

Contents:

 

The replacement module includes two sealed stainless steel capacitive proximity sensors, complete wiring and solid state switching circuitry, two steel operators, one saddle splice, and includes an off/on switch for use at car shows when you want to leave your doors open for an extened amount of time without draining the battery.

 

Tools Required:

 

Phillips Screwdriver

Needlenose pliers

Solvent Cleaner - acetone or lacquer thinner work best

Masking tape - for identifying wires

10mm socket and wrench

Yellow or red china marker

 

Lets get started:

 

Remove the number 12 fuse from the fuse block, this is the electrical circuit for the courtesy lamps.

On the driver's side of the car, remove the knee pad on the left side of the steering column. Remove the two wires from the back of the light switch. Place some masking tape on each pair of wires and identify. The black switch wire is Negative.

Using the Phillips screwdriver remove the screw in each switch and pull the switch out through the hole. Place switch parts into a plastic bag or other container and donate to a museum. 

Get in the drivers seat and close the door. Using the china marker reach under the dash and through the switch hole mark the door where the switch will sense the door. Open the door and check your mark location. If your mark is on the edge of the black plate on the door you will need to add the new metal plate to extend the surface that the sensor sees. When adding the new plate clean the surfaces of both plates with acetone for good adhesion of the Peel & Stick (PAS) tapes.

The control box will mount on the passenger side knee guard. Starting from the passenger side footwell thread the drivers side sensor through the dash over to the drivers side switch location. Take the sensor and remove the one nut and one lock washer from the nose end. With the door closed, push the sensor through the hole where the switch came from. Back off the remaining locknut until you feel the sensor touch the door. Now turn the locknut so the sensor is adjusted approximately 1/8 inch back from the door. Open the door and while holding the sensor in place, reattach the lock washer and nut to the sensor and finger tighten. 

Attach the sensor wire with the BLACK stripe to the BLACK (Negative) switch wire. Attach the other sensor wire to the purple/black wire. ( CAUTION: Make sure the fit onto the terminal is snug. If the terminal is loose, remove it and crimp the terminal with a plier to tighten it up and reattach).

NOTE: It may be easier on the passenger side to remove the passenger shin pad from the dash. This will help from standing on your head while working under the dash. I did mine without taking it off L.

On the passenger side of the car, remove the two wires from the back of the light switch. With masking tape, mark the BLACK wires as Negative. Using the Phillips screwdriver remove the screw in the switch and pull the switch out through the hole.

Get in the passenger seat and close the door. Using the china marker reach under the dash and through the switch hole mark the door where the switch will sense the door. Open the door and check your mark location. If your mark is on the edge of the black plate on the door you will need to add the new metal plate to extend the surface that the sensor sees. When adding the new plate clean the surface of the black plate with acetone for good adhesion of the Peel & Stick (PAS) tapes.

Take the remaining sensor and remove the one nut and lock washer from the nose end. Close the door and from inside the car push the sensor through the hole where the switch came from. Backoff the sensor locknut untill you feel the sensor touch the door. Adjust the locknut so the sensor is now about 1/8 inch from the door. Open the door, reattach the lock washer and nut to the sensor and finger tighten.

Take the sensor terminal wire with the BLACK stripe and connect it to the switch Negative connector (Black wire). Connect the remaining sensor wire to the purple/black wire connector.

Under the passenger side of the dash find the glove box light which has two purple wires and a purple/white wire. The two purple wires are the hot wires from the fuse. Take the saddle splice and splice the yellow wire into one of the purple wires. (You could also make a solder connection here for a more permanent connection)

Using a 10mm socket loosen the angle bracket holding the kick pad. Remove the nut and washer from the body side and lift the bracket off the stud. Place the switch box bracket over the stud and reassemble the bracket and tighten.

SMOKE TEST TIME

Re-insert the fuse into the #12 fuse holder slot. If the lights on the doors do not come on flip the switch on the switch box. The lights should now be ON. If you have no lights, check the fuse and then the wiring diagram.

Move a wrench or other metal object close to the end of the sensor, you should see the lights go off when within 1/4" of the sensor.

ADJUSTING THE SENSORS

The door must NOT strike the sensor.

After the system tests out ok, coil up extra wires and tie up under dashboard.

Notes:

This module will not correct other malfunctions to your courtesy lamps other than those associated with the switches themselves. Loose connections at the lamps, diodes, and broken wires must be corrected prior to installing the module.

Disclaimer:

All components on this module were tested and working before shipment to the customer. The customer assumes all responsibility for installing this module into any vehicle. The seller will not be responsible for any damage to the customers vehicle due to the customer improperly installing the module or using the module for anything but the intended purpose.

Warranty:

I will warranty the new module for two years and will repair or replace any defective module at no cost to the customer within that period.

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