Vehicle Wiring Details for a
1995 Chevrolet Tahoe
Item Wire Color Polarity Wire Location
12V red Positive (+) ignition harness
Starter yellow or purple Positive (+) ignition harness
Starter 2 none
Ignition pink Positive (+) ignition harness
2nd Ignition pink/white or white Positive (+) ignition harness
3rd Ignition none
Accessory orange Positive (+) ignition harness
Accessory 2 none
Tachometer purple/white [4] ECM [5]
Power Door (Lock)
Wiring Diagram for
[[1]] Door Lock
lt. blue [1] either door boot
Power Door (Unlock)
Wiring Diagram for
[[1]] Door Unlock
white [1] either door boot
Door Trigger purple Negative (-) headlight switch
Dome Supervision
Wiring Diagram for
[Negative (-)] Dome
white Negative (-) headlight switch
Headlights yellow Positive (+) headlight switch
Parklight Positive brown Positive (+) headlight switch [3]
Parklight Negative none
Wipers purple Positive (+) steering column
Left Front Window
(Up/Down)
dk. blue - brown drivers door switch
Right Front Window
(Up/Down)
lt.blue - tan drivers door or boot
Left Rear Window
(Up/Down)
green - purple A drivers door or boot
Right Rear Window
(Up/Down)
lt. grn - purple A drivers door or boot
Trunk/Hatch Pin tied in with doors
Hood Pin none
Trunk/Hatch Release
Wiring Diagram for
[Positive (+)] Trunk/Hatch
black Positive (+) release switch
Factory Alarm
(Arm)
none
Factory Alarm
(Disarm)
none
Horn black Negative (-) steering column
Brake white Positive (+) brake pedal switch
Door Motor
(Lock)
lt. blue keyless entry module [2]
Door Motor
(Unlock)
tan keyless entry module [2]
Disarm white keyless entry module [2]
Disarm No Unlock none
Additional Info:
Diesel glow plug, dk. blue(+) located at the instrument cluster. [1] The 4 door models are positive trigger , and the 2 door models are 5-wire . [2] The keyless entry module is located above the gas pedal. [3] Also found low in the drivers kick panel. [4] Also found as white at the instrument cluster. For diesel tach, use white at the alternator or instrument cluster. [5] The ECM is located behind the glove box to the right side.

ATTENTION: This wiring information is being provided free of charge and on an "as is" basis, without any representation or warranty. It is your responsibility to verify any circuit before interfacing with it by using a digital multimeter. GNU Industries, Inc. assumes no responsibility with regards to the accuracy or currency of this information. Proper installation in every case is and remains the responsibility of the installer. GNU assumes no responsibility resulting from an improper installation, even in reliance upon this information.

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