* Repair Manual: A factory service manual specific to a 1998 Pontiac Transport is your best bet. These manuals contain detailed wiring diagrams, schematics, and troubleshooting information. You can often find these online (eBay, Amazon) or at auto parts stores.
* Wiring Diagrams: Even without a full manual, you might be able to find wiring diagrams specific to certain systems (lighting, engine, etc.) online. Search for "1998 Pontiac Transport wiring diagram [system name]" (e.g., "1998 Pontiac Transport wiring diagram headlights"). Be cautious about the source; ensure it's reputable.
* Vehicle Identification Number (VIN): Your VIN is crucial for finding precise information. Different options and packages will affect the wiring.
* Color Codes: Wiring harnesses use color-coded wires. The repair manual will decode these colors, telling you what each wire's function is.
* Caution: Working with car wiring can be dangerous. Disconnect the battery's negative terminal before starting any work to prevent shorts and electrical shocks.
General Areas to Consider:
* Engine Compartment: This area houses the main engine wiring harness, including connections for the alternator, starter, sensors, ignition system, and fuel injection.
* Interior: The interior wiring handles everything from the dashboard lights and gauges to power windows, locks, and the radio.
* Body: This includes wiring for lights, taillights, turn signals, and other exterior functions.
* Chassis: Wiring for sensors and other components related to braking, suspension, and other chassis systems.
Without knowing the specific problem you're trying to solve, I cannot provide more detailed information. To get more targeted help, please specify:
* What are you trying to do? (e.g., install a new stereo, fix a broken tail light, troubleshoot a starting problem)
* What specific system is affected? (e.g., lighting, engine, interior)
* What are the symptoms? (e.g., no power to the headlights, engine won't crank)
The more detail you provide, the better I can assist you in understanding your 1998 Pontiac Transport's wiring.
