![]() Most common complaints are: no turn signals, one or more lights (Volt-Ohm-Meter) and the circuit diagram for your year car. System works, you can start troubleshooting. Now that you understand a little about how your turn signal Signal switch is actuated, the brake light power feed isĭisconnected and the turn signal feed is activated to allow theĭirectional signal to override the brake lights. When the brake light power feed is energized. The directional relay allows all lights to turn on simultaneously Two-sectioned (right and left) relay routes power through to the ![]() Together for T-Birds.) and then to the directional relay. The emergency switch is on for Cougars and connects all lights The power is then routed first through theĮmergency relay (which disconnects all but the center light if The sequencer has three cams that, when rotated,ĭepress switches corresponding to the inboard, center, and Power for the lights is fed through the turn signal relay to the That select and feed power to the corresponding bank of lights. Lever on the turn signal switch is moved, it completes circuits The appropriate year factory shop manual.īasically, the system works as follows: when the directional The most failure prone partsĪre the mechanical sequencer, the turn signal switch, and theĮmergency relay in the trunk. The 1967 system also has an emergency relay and a In the driver's side trunk under the mat or behind the backseat Relay, an emergency relay, and a motor-driven sequencer (located Parts: the turn signal switch, (located in the steering column),Ī turn signal relay (located under the dash), a directional The turn signal system has five electro-mechanical This information is alsoĪpplicable to 1967-early 1969 T-Birds as they share the same basic ![]() While most the information has beenĪcquired through experience on a 1968 model, the ideas can beĪpplied when servicing a 1967 model too. This article covers troubleshooting 1967-1968 Mercury Cougar ![]() Troubleshooting 1967-1968 Cougar and Thunderbird Sequential Turn Signal ![]()
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