Test 3

1995 Buick Roadmaster Estate WagonSECTION Test 3
  1. Disconnect right front window switch connector. With ignition switch in RUN position, connect a test light between right front window switch Light Blue wire connector terminal and Tan wire connector terminal. Press right front window switch (on master switch) up then down.
  2. If light comes on in both directions, go to step 3). If light does not come on in both directions, check for open in Light Blue and Tan wires between master switch and right front window switch. If wires are okay, replace master switch.
  3. Connect a jumper wire between right front window switch connector Light Blue wire and Dark Blue wire (going to right front window motor). Connect a jumper wire between right front window switch connector Tan wire and Brown wire.
  4. Press right front window switch (on master switch) up and down. If window motor operates, replace right front window switch. If window motor does not operate, check for open in Dark Blue and Brown wires between right front window switch and right front window motor. If wires are okay, replace motor.
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When to See a Mechanic

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

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