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.
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HOMESERVICE MANUALSBUICK1999REGAL LSREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALCOMPONENT LOCATIONSELECTRICAL COMPONENT LOCATORCONNECTORS
1999 Buick Regal LS
Electrical Component Locator: Connectors
1999 Buick Regal LSSECTION Connectors
CONNECTORS LOCATION
| Component | Location |
|---|---|
| C101 (Gray, 20 Pin) | On left strut tower. |
| C105 (Gray, 4 Pin) | On radiator. |
| C111 (7 Pin) | On top of transaxle. |
| C113 (Gray, 20 Pin) | On top of transaxle. |
| C141 (Black, 10 Pin) | Behind left headlamp. |
| C142 (Black, 10 Pin) | Behind right headlamp. |
| C200 (Black, 56 Pin) | Behind right side of dash. See Figure . |
| C201 (Black, 17 Pin) | On right side of steering column. See Figure . |
| C205 (Black, 4 Pin) | On right side of steering column. |
| C206 (Black, 3 Pin) | Behind right side of dash. |
| C240 (Natural, 10 Pin) | Behind console shift. |
| C242 (Black, 3 Pin) | Behind ashtray. |
| C250 (8 Pin) | Behind center of dash. |
| C252 (32 Pin) | Behind center of dash. |
| C301 (Black, 32 Pin) | On left "A" pillar. |
| C302 (16 Pin) | On right "A" pillar. |
| C311 (Black, 6 Pin) | Below driver seat. |
| C312 (Black, 6 Pin) | Below passenger seat. |
| C351 (Black, 6 Pin) | On left "B" pillar. |
| C352 (Black, 6 Pin) | On right "B" pillar. |
| C380 (10 Pin) | Below rear of console assembly. |
| C390 (Black, 8 Pin) | On top of shelf panel. |
| C395 (Black, 2 Pin) | Under right side of rear shelf trim panel. |
| C398 (Black, 3 Pin) | On right "C" pillar. |
| C401 (Gray, 6 Pin) | Behind taillamp. |
| C402 (Gray, 6 Pin) | Behind taillamp. |
| C405 (Black, 8 Pin) | Forward of spare wheelwell. |
| C410 (Black, 8 Pin) | Above right wheelwell. |
| C420 (Blue, 2 Pin) | Under center of rear window trim panel. |
| C915 (Black, 4 Pin) | On center of rear compartment lid applique. |
RENDER: 1.0x
NO RELATED
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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.