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Twilight Sentinel Relay Module Amplifier Controller

This category on the website [ Relays and Wiring ] we are giving you all of the information related to the individual relays in the Buick Turbo Regal, along with the associated wiring, connector plugs, etc.

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VEHICLE APPLICATION:

Buick Regal, T-Type, Turbo T, Limited, Grand National, GNX

RELAY NAME:

[has multiple names, all are the same part]
Twilight Sentinel Relay
Twilight Sentinel Module
Twilight Sentinel Amplifier
Twilight Sentinel Controller

PURPOSE OF RELAY (Module):

Controls the Twilight Sentinel system, works with photo cell and dimmer (rotary) switch.
The system turns the headlights on and off at dusk.
Also they delay of how long head lights stay on after igntion off is controlled via the switch.

TURNS ON-OFF / FUNCTIONS / USED WHEN:

when the photo cell detects it’s dark outside, the relay module turns the system on (providing that the dash switch is turned on)

LOCATION IN VEHICLE:

behind dash, left side of glove compartment

ORIGINAL GM PART NUMBER:

Relay/Module/Amplifier/Controller, GM # 00914027 (or 05976634)

RELAY / BASE COLOR:

white

CONNECTOR PLUG COLOR (RELAY SIDE):

black

WIRES ATTACHED (RELAY SIDE):

n/a

CONNECTOR PLUG COLOR (HARNESS SIDE):

black single row 12 pin connector

NUMBER OF WIRES ATTACHED (HARNESS SIDE):

12

COLOR & PURPOSE OF (HARNESS SIDE) WIRES:

black-yellow “A” (delay input), goes to sentinel control (rotary dial) switch “A” (min, 15 sec)

black “B” (ground), goes to (junction) to ground
(junction connects to other things)

pink-white “C” (ignition input), goes to (junction) to ignition switch

orange “D” (cancel lights on warning input), goes to head light switch “F”

light green “E” (delay input), goes to sentinel control (rotary dial) switch “D” (max, 3 min)

yellow “F” (head light control), goes to head light switch “D”
(and “D” also connects to headlight dimmer [hi beam] switch)

brown-white “G” (lights on alarm output), goes to (junction) to gray wire to chime alarm [convenience center]

dark green-white “H” (park lights control), goes to (junction) to head light switch “A”
(junction connects to other things)

white “J” (photocell input), goes to sentinel photocell “B”

orange “K” (park lights control), goes to head light switch “E”

purple “L” (on/off), goes to sentinel control (rotary dial) switch “C” (on/off)

red-white “M” (head light control), goes to head light switch “B”
(and “B” [black wire] also connects to sentinel photocell “A”)

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OTHER NOTES:

Officially called “Twilight Sentinel Headlight Control” in Buick literature.
This is a pretty rare option on all Turbo Buicks.
The Twilight Sentinel option was $57 in 1987.

Testing the system, at night:
Shine a flashlight at the photocell, and the lights should turn off within 30 seconds.

If this module goes bad, can cause a wide variety of issues (headlight problems being stuck on or off, )

T82 rpo option code on trunk sticker
[SEE the Twilight Sentinel sensor post]
[SEE the Twilight Sentinel switch post]

Many Turbo Regals already have all of the wiring for the Twilight Sentinel system installed in the wiring harness. If you install the missing 3 parts, the system is complete.

BE CAREFUL NOT to ground out any of your dash (or console) lights, as this will FRY the module!

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PHOTOS OF RELAY AND CONNECTED WIRES:
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Here’s a list of all of the relays in the Buick Regal:
(click the links to go to the one you need info about)

* Air Conditioning Compressor Cutout Relay (A/C Cut-out)
* Blower Relay (hvac fan blower motor)
* Coolant Fan Delay Relay
* Door Lock Relay
* Fuel Injector Relay (aftermarket)
* Fuel Pump Relay (factory)
* Fuel Pump Hot Wire Relay (aftermarket)
* High Speed Coolant Fan Relay
* Horn Relay
* Ignition Module Relay (aftermarket, hot wire kit for coil pack)
* Low Speed Coolant Fan Relay
* Power Antenna Relay
* Power Master Brake Relay
* Starter Interrupt Relay (part of Theft Deterrent system)
* Theft Deterrent Relay
* Twilight Sentinel Module Switch Relay

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