Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1987 Buick Electra BaseFACTORY OEM SERVICE PROCEDURE
Miscellaneous Components
MISCELLANEOUS COMPONENTS LOCATION
| Component | Location | |
|---|---|---|
| ABS Power Fuse | On left side of firewall, near ABS pump. | |
| ABS Controller Fuse | On left side of firewall, above ABS pump. See Figure. | |
| ABS Diode | In wiring harness under left side of dash. | |
| ABS Pump Fuse | On left side of firewall, near ABS pump. | |
| A/C Compressor Clutch Diode | In connector at rear of compressor. See Figure & 17. | |
| A/C-Heater Blower Resistors | On right side of firewall in engine compartment, in top of plenum. | |
| ALDL Connector (Cadillac) | Under left side of dash, to right of steering column. | |
| ALDL Connector (Except Cadillac) | Under left side of dash, to left of steering column. | |
| Alternator Diode | Taped to wiring harness above radio. | |
| Cooling Fan Diode | Taped to harness near cooling fan control relay. See Figure. | |
| Cooling Fan Resistor | On fan support frame behind radiator. | |
| Cruise Control Servo | On top left side of engine. See Figure. | |
| Dimming Sentinel Amplifier (Cadillac) | Part of mirror assembly at center of windshield. | |
| Electronic Level Control Diode | In instrument panel wiring harness under dash, behind radio. | |
| Elect. Level Con. Test Connector | Near top of electronic level control compressor. See Figure. | |
| Fuel Pump Prime Connector | Taped to wiring harness, near left front wheelwell. See Figure. | |
| Fuse Block | In lower center of dash. | |
| Fusible Links | ||
| A (Ignition Switch) (Black - Cadillac) | At jump start junction block on left inner fender panel. | |
| A (Ignition Switch) (Red - All Others) | On left inner fender panel, behind battery. | |
| B (Fuse Block) (Black - Cadillac) | At jump start junction block on left inner fender panel. | |
| B (Fuse Block) (Red - All Others) | At jump start junction block on right inner fender panel. | |
| C (Light Switch) (Green - Cadillac) | At jump start junction block on left inner fender panel. | |
| C (Light Switch) (Red - All Others) | At jump start junction block on right inner fender panel. | |
| D (Green - Cadillac) Relay Center | At jump start junction block on left inner fender panel. | |
| D (Rust- All Others) Cooling Fan Relays | At jump start junction block on right inner fender panel. | |
| E (Green - Cadillac) Fan Control Relay | At jump start junction block on left inner fender panel. | |
| E (Red - All Others) ECM | At jump start junction block on right inner fender panel. | |
| F (Rust) Cell. Phone | At jump start junction block on right inner fender panel. | |
| H & J (Red - Exc. Cadillac) ABS Pump | At jump start junction block on right inner fender panel. | |
| K (Green - Cadillac) EFE Relay | At jump start junction block on left inner fender panel. | |
| M (Green - Cadillac) Fuse Block | At jump start junction block on left inner fender panel. | |
| N & P (Red - Cadillac) ABS Pump | At jump start junction block on left inner fender panel. | |
| Horn Circuit Breaker | In right side of fuse block, position No. 24. | |
| Instrument Panel Inverter | Under right side of dash, above glove box. | |
| Jump Start Junction Block (Cadillac) | In front of left front wheelwell. See Figure. | |
| Jump Start Junction Block (Except Cadillac) | In front of right front wheelwell. See Figure. | |
| Keyless Entry Diode | Behind right side of dash, near connector "C201". | |
| Power Seat Diode | In connector at front of each seat. | |
| Power Seat Recliner Capacitor | In connector at front of each seat. | |
| Power Window Circuit Breaker | In right side of fuse block, position No. 23. | |
| Relay Center (Cadillac) | Under right side of dash, below glove box. | |
| Theft Deterrent Diode | Taped to instrument panel harness near right kick panel. | |
| Theft Deterrent In-Line Fuses | Under left side of dash, to left of steering column support. | |
| TPS Test Connector | Taped to wiring harness at left side of firewall. See Figure. | |
| Trunk Pull-Down In-Line Fuse | Near latch at center of trunk lid. | |
| Twilight Sentinel Amplifier | Under left side of dash, to right of light switch. | |
| Twilight Sentinel Photocell | On top left side of dash, below right side of speaker grille. | |
| Vehicle Speed Sensor Buffer | Under right side of dash. | |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.