1994 Buick Roadmaster BaseFACTORY OEM SERVICE PROCEDURE

Electrical Component Locator: Miscellaneous

MISCELLANEOUS LOCATION

Component Location
Blower Motor Resistor Behind right side of dash, near blower motor.
Data Link Connector (DLC) Under dash, to right of steering column. See Figure .
Diodes
A/C Compressor Clutch Taped inside compressor clutch harness connector.
Circuit Isolation On turn/hazard switch harness connector breakout branch.
Door Open Warning (SE Models) Taped 1" from instrument cluster connector breakout branch.
DRL Dropping Diode Attached to brake pedal bracket.
Interior Lights Taped 1" from instrument cluster connector breakout branch.
Engine Oil Change Reset Switch On left side of dash, next to fuse block.
Fuel Pump Test Connector Near A/C accumulator.
Ignition Test Connector On top right side of engine, near rocker cover. See Figure .
Remote Control Door Lock Receiver Mounted under center of rear shelf.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.