ON Circuit

Perform tests at amplifier 6-pin connector. Turn ignition on and connect voltmeter between appropriate amplifier connector terminal and ground. See AMPLIFIER CIRCUIT IDENTIFICATION table.

AMPLIFIER CIRCUIT IDENTIFICATION

Application

Wire Color

1991 Continental

White/Purple

1991-92 Cougar & Thunderbird

White/Purple

1991-92 Escort & Tracer

Black/Yellow

1991-92 Mustang

White/Purple

1991-92 Sable & Taurus

White/Purple

1991-92 Tempo & Topaz

White/Purple

1991-92 Town Car

White/Purple

All Others

⁽¹⁾ Pink/Orange

⁽¹⁾	Circuit No. 296

Battery voltage should be present. If battery voltage is not present, check for blown fuse. On Escort and Tracer, connect voltmeter between circuit No. 356 (Red/Yellow wire) and ground. On all other models, connect voltmeter between circuit No. 151 (Light Blue/Black wire) and ground. On all models, battery voltage should be present when cruise control ON button is pressed. If battery voltage is not present, perform CONTROL SWITCHES test under COMPONENT TESTS. If battery voltage is present, go to next step.
Release ON button. Voltmeter should read 7.8 volts, indicating ON circuit is engaged. Voltage should remain at 7.8 volts until another cruise control circuit is activated. If voltage is not as specified, check system ground, wiring, fuse and circuit breaker. Install a known good amplifier and recheck (if necessary).