Since the 993 already has electric door locks adding a timer that locks the doors a few seconds after the ignition key is turned to the accessory position is an easy DIY project. This is a significant convenience and a safety feature. One of the best additions I have ever done to my car!
Disclaimer: The content of this page, relates specifically to the Porsche 993 (911 1995 to1998) The author here is not a professional automotive technician and some of the procedures described on this page may not be the best to use in all situations. Though the author strives to provide completely accurate and appropriate information and attempts to keep it up to date, in some cases, some of the information you find on this page may be outdated or in error therefore, please feel free to use the information on this page at your own risk.
Parts needed:
- Altronix 6062 Multi-Purpose Timer
- A length of red automotive 18 to 16 Gauge primary wire;
- A length of black automotive 18 to 16 Gauge primary wire;
- A length of an alternate color automotive 18 to 16 Gauge primary wire;
- A box to contain the timer circuit board, I used a plastic soapbox;
- An SPST switch with pigtail wires attached.
Supplies needed:
- Soldering Iron and thin gauge rosin-core electrical solder
- Scotch-Lock splice terminals (alternative to soldering)
- 3M Type 88 or 33 electrical tape
- A small amount of open-cell foam padding
Procedure Steps:
- Carefully read all the steps in the below procedure before beginning;
- Set the 4 switch settings on the timer's circuit board to the ON position;
- The jumper 2 labeled "J2" is to be cut, disconnected, on the timer's circuit board;
- Use a length of Black primary wire to attach the timer's terminal marked as negative (-) to a chassis ground or any ground wire such as the one leading to the radio. Ground wires are usually solid brown in color on a 993;
- Use a length of Red primary wire to attach the Timer's terminal marked as positive (+) to a switched power circuit. This can be attached to the ignition switch accessory position pin or the switched power wire leading to the radio. If one has added a switched power outlet to their dash it can be attached to that circuit as well;
- Install a toggle switch inline along the red wire above used to disable the automatic door locking function. This is needed when going through the program steps to mate new key fobs to the car.
- Use a length of the alternate color primary wire to attach the timer's terminal marked as normally open (NO) to one side of the central locking rocker switch in the center console;
- Use a length of the alternate color primary wire to attach the Timer's terminal marked as the common connection (C) to the other side of the central locking rocker switch in the center console;
- Test the timer with the ignition key and adjust the time of the delay using the thumb wheel on the timer's circuit board. Set it so the doors lock in a little less than a 10-second delay from turning the key to the accessory position. Do not make it any longer or under certain conditions, one may inadvertently lock themselves out of their car.
- Encase the timer in the plastic box using some foam as padding so it doesn't abrade against the inside of the box from vibration over time and to avoid rattling around in the box
- Cut a slot in one end of the box so the wires have a path to the outside and add a little electrical tape over the wires where they contact the slot so they are not damaged over time.
- Tuck the box and the earlier added disable switch in a convenient place under the dash.
- Make a note in the Owner's Manual of the need to use the disabling switch installed in this procedure when mating keyfobs to the alarm system.
- This modification is IMMO BLOCK compatible.
- Also, consider adding a headlights' left-on warning buzzer to avoid running your battery down when parking and inadvertently leaving your headlights on.
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