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:
Coolant Fan Delay Relay
PURPOSE OF RELAY:
turns on or keeps the coolant (radiator) fan running after the vehicle is shut off
TURNS ON-OFF / FUNCTIONS / USED WHEN:
after the vehicle is shut off, IF the temperature is over 226 degrees
LOCATION IN VEHICLE:
driver side fender, third relay (closest to the firewall) on panel
ORIGINAL GM PART NUMBER:
25527402
RELAY / BASE COLOR:
black
CONNECTOR PLUG COLOR (RELAY SIDE):
black
WIRES ATTACHED (RELAY SIDE):
n/a
CONNECTOR PLUG COLOR (HARNESS SIDE):
black
NUMBER OF WIRES ATTACHED (HARNESS SIDE):
7 (4 on 1 plug, 3 on the other plug)
COLOR & PURPOSE OF (HARNESS SIDE) WIRES:
c1:
3 wires:
red “C”, goes to fusible link “E”
(link connects to other things)
black-pink “B”, goes to high speed coolant fan relay “4”
“A”, goes to ? {not exactly sure here}
{maybe a dark green-yellow wire}
it “might” go to (junction) that connects with high speed fan relay, coolant fan temp switch, a/c high pressure switch
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c2:
4 wires, but only 3 pins on black connector
pink-black “A”, goes to (junction) to ECM/SOL fuse
(junction connects with brake switch [above brake pedal])
(junction connects with other things)
[2 red wires on 1 terminal, on middle pin]
red “B” (1 of 2 wires), goes to (junction) orange wire goes to pwr brk fuse
red “B” (1 of 2 wires), goes to powermaster brake relay “C”
black-white “C”, goes to (junction) to ground
(junction connects with a/c high pressure switch “C”)
(junction connects with high pressure cut-out switch “B”)
(junction connects with coolant fan “C”)
(junction connects with other things)
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OTHER NOTES:
called “coolant fan delay relay” on diagrams.
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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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