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1968 Mercury Cougar Sequential Turn Signal & Brake Light Wiring Diagram Fig. 42

Wiring diagram for Cougar turn signals, emergency warning and brake lights showing relays, connectors and circuit numbers.

AI caption · Photo 277 of 486

This document is page 19-59 from a Ford/Mercury factory shop manual schematic section (Group 19 — Schematics), showing FIG. 42, 'Turn Signals, Emergency Warning and Brake Lights—Cougar (Continued).' It is a wiring schematic covering the Cougar's sequential turn signal system, including the Emergency Warning Relay, Sequential Turn Signal Relay, and Sequential Turn Signal Motor, along with the right-hand and left-hand sequential turn signal and brake lamps. Circuit numbers shown include 436, 436A, 437, 438, 438A, 440, 441, 442, 443, 444, 445, 446, 447, 448, 449, 459, 475, 514, 575, 57, 57A, 57B, and 57C. Wiring harness assemblies referenced include 14401 ASSY., 14405 ASSY., 14A005 ASSY., 13A449 ASSY., 14A315 ASSY., and 13A719 ASSY. Connector identifiers D-3, D-4, D-41, and D-43 are marked, with RED and WHITE connector distinctions at D-3/D-4. The right lamps carry circuits 445/446/447 and the left lamps carry circuits 442/443/444. A reader can trace how the sequential flasher relay and motor distribute power to the three rear lamp segments per side and how the emergency warning (hazard) relay ties into the same circuits. Drawing reference K 2257 A2 appears near the lower right.

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Frequently asked questions

What circuits feed the right-hand sequential turn signal and brake lamps on the Cougar?
Circuits 445, 446, and 447 each feed one of the three right-hand sequential turn signal and brake lamps.
What circuits feed the left-hand sequential turn signal and brake lamps?
Circuits 442, 443, and 444 feed the three left-hand sequential turn signal and brake lamps.
Which relays and components control the Cougar sequential turn signals in this diagram?
The diagram shows an Emergency Warning Relay, a Sequential Turn Signal Relay, and a Sequential Turn Signal Motor, with circuits 436, 437, 438, and 459 connecting the motor through connector D-43.
What wiring harness assemblies are referenced in this schematic?
Assemblies 14401, 14405, 14A005, 13A449, 14A315, and 13A719 are labeled at connector points throughout the diagram.
Which connectors are identified in the sequential turn signal circuit?
Connectors D-41, D-4, D-3 (marked RED), a second D-4 (marked WHITE, point A), and D-43 are shown, along with body-side connector groups labeled J and K.

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