Check the passenger compartment power relay chart for exact positioning of each 10A, 15A, and 20A link. Labels near the main distribution box indicate circuits for ignition, headlights, climate control, and audio systems. Use a multimeter to verify continuity before replacing any blown link, especially the ones controlling the engine control module and fuel pump.
Locate the primary under-hood control center on the left side of the engine bay. Slots marked with high-current capacity handle alternator output, radiator fan, and starter motor circuits. Keep a diagram of amperage ratings accessible to avoid overloading circuits when adding aftermarket electronics.
For dash-mounted distribution points, note that slots for interior lights, power windows, and accessory sockets are grouped by function. Replace only with exact-rated connectors to prevent short circuits. Testing each connector individually reduces the risk of accidental power loss to critical modules.
Always consult the service label inside the cover for amperage and position details. Misplacement of even a single link can disable multiple systems, from safety restraints to dashboard instrumentation. Maintaining a clear record of any modifications ensures faster troubleshooting in future repairs.
99 Integra Power Distribution Layout
Check the engine compartment access panel for a rectangular box containing labeled relays and circuit protectors. The main ignition line is rated at 30 amps, while headlights and turn signal circuits are each protected by 15-amp units. Replace any blown unit with the exact amperage to avoid overheating wires. Keep a set of spares for auxiliary systems like the stereo and climate control, as they share 10-amp circuits that can trip under high load.
Under the dashboard, a secondary panel controls interior and safety systems. The cabin lighting and accessory sockets are split across two 7.5-amp holders, while the horn and windshield wiper motors are individually rated at 20 amps. Trace wiring using the numbered slots to pinpoint faults without removing multiple connectors. Label each slot during inspection to prevent misplacement and ensure correct reinstallation after maintenance.
Identifying Each Circuit Protector and Its Function
Check the labeled board carefully to locate every miniature circuit protector. Each slot is numbered and corresponds to a specific system, such as headlights, air conditioning, or the audio module. Cross-reference the numbers with the onboard chart to avoid accidental overload or misplacement.
Use the following list as a quick reference:
- 1 – Main ignition relay, supports up to 20A
- 2 – Horn and turn signals, rated 15A
- 3 – Headlight system, 10A
- 4 – Interior lighting and dashboard indicators, 7.5A
- 5 – Power outlets and cigarette lighter, 20A
- 6 – Cooling fans, 30A
- 7 – Windshield wipers, 15A
For accurate identification, visually inspect the transparent cover for colored filaments or symbols, which indicate the operational range. Keep a small test light handy to confirm continuity without removing components unnecessarily. Group components by function to streamline maintenance and quickly detect faulty links in electrical circuits.