What fuses power the 1992 Lincoln Town Car anti-theft system?

A 20A fuse in position 11 of the I/P fuse panel (hot at all times, circuit 195 T/W), a 15A fuse in position 6 (hot in run, circuit 640 R/Y), and a 25A fuse (position P) in the engine compartment fuse box feeding the ignition switch (circuit 37 Y).

What wire color are the door ajar switch circuits?

All four door ajar switches (left/right front and rear) use circuit 627 BK/O (black/orange), joining at splice S259 and feeding the anti-theft controller module's door ajar input (pin 3) and the keyless entry system.

Which wires control the door lock motors?

Lock side is circuit 117 PK/BK from the controller's lock doors input (pin 9) via splices S260 and S262 to all four door lock motors; the unlock/return side is circuit 118 PK/O joining at S261, with 163 R/O for the unlock driver's door input.

When do the trunk lid and hood anti-theft switches close?

The trunk lid anti-theft switch closes when the lock cylinder is pulled out, and the anti-theft hood switch closes when the hood is open; both use circuit 23 T/LG to the controller's trunk/hood tamper input (pin 5).

How does the anti-theft system interrupt starting?

The controller's start interrupt output (pin 11, circuit 342 LG/P) controls a start interrupt relay in the ignition switch start circuit (137 Y/BK); circuit 325 DB/O then continues to the starting system (page 20-1).

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1992 Lincoln Town Car Anti-Theft System Wiring Diagram - Alarm Circuits & Colors

1992 Lincoln Town Car anti-theft system wiring diagram with modules, fuses and connectors

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1992 Lincoln Town Car anti-theft system wiring diagram showing modules, fuses, switches and connector wire codes.

AI caption May 2010 · Photo 1381 of 1452

This scan is a complete anti-theft (security) system wiring diagram for the 1992 Lincoln Town Car, annotated by dRock96Marquis (2010). It is drawn in three sections. The top section shows power feeds to the Anti-Theft Controller Module: a 20A I/P fuse panel fuse (hot at all times, circuit 195 T/W to battery/door disarm switch pins), a 15A fuse hot in run (640 R/Y), and the anti-theft warning indicator in the warning lamps module (343 DB/LG). It also covers the right and left front door disarm switches (25 DG/P, closed when unlocked with key), trunk lid anti-theft switch, and anti-theft hood switch (23 T/LG). The middle section shows the ignition switch feed (25A engine compartment fuse, 37 Y / 137 Y/BK), the start interrupt relay (325 DB/O to starting system, 342 LG/P), flash lights output (218 W/P), sound horn output (1 DB), and the four door ajar switches on circuit 627 BK/O with instrument cluster and keyless entry interfaces. The bottom section details lock/unlock outputs: 117 PK/BK to all four door lock motors, 118 PK/O and 163 R/O to keyless entry, and the ignition cylinder tamper switch (936 DG/W). Ground points G200, G203, G207, G213 and splice/connector IDs are labeled with page references to the factory EVTM.

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Frequently asked questions

What fuses power the 1992 Lincoln Town Car anti-theft system?: A 20A fuse in position 11 of the I/P fuse panel (hot at all times, circuit 195 T/W), a 15A fuse in position 6 (hot in run, circuit 640 R/Y), and a 25A fuse (position P) in the engine compartment fuse box feeding the ignition switch (circuit 37 Y).
What wire color are the door ajar switch circuits?: All four door ajar switches (left/right front and rear) use circuit 627 BK/O (black/orange), joining at splice S259 and feeding the anti-theft controller module's door ajar input (pin 3) and the keyless entry system.
Which wires control the door lock motors?: Lock side is circuit 117 PK/BK from the controller's lock doors input (pin 9) via splices S260 and S262 to all four door lock motors; the unlock/return side is circuit 118 PK/O joining at S261, with 163 R/O for the unlock driver's door input.
When do the trunk lid and hood anti-theft switches close?: The trunk lid anti-theft switch closes when the lock cylinder is pulled out, and the anti-theft hood switch closes when the hood is open; both use circuit 23 T/LG to the controller's trunk/hood tamper input (pin 5).
How does the anti-theft system interrupt starting?: The controller's start interrupt output (pin 11, circuit 342 LG/P) controls a start interrupt relay in the ignition switch start circuit (137 Y/BK); circuit 325 DB/O then continues to the starting system (page 20-1).