
Locate the primary power module behind the passenger-side firewall cover for immediate access to circuits controlling headlights, fuel injectors, and ignition relays.
Verify amperage ratings printed on each protective unit before removing or replacing them. Low-current circuits typically range from 5A to 15A for interior systems, while high-current modules reach 30A to 40A for cooling fans and starter relays.
Disconnect the negative battery terminal before handling any components to prevent shorts or damage to the electronic control units. Use a plastic tool to lift connectors and avoid metal contact that could cause sparks.
Document all positions of modules and connectors prior to removal. Photographs or notes ensure correct reinstallation and maintain power to critical systems like ABS, fuel pump, and engine management electronics.
1995 Mustang Cobra GT Underhood Electrical Panel Guide

Access the main power module located near the battery on the driver side. Remove the plastic cover by pressing the retaining clips and lift carefully to expose the circuit controls.
Identify each protective unit by the printed amperage and function labels. Key circuits include:
- 10A for instrument panel lights and interior accessories
- 20A for the horn and power seats
- 30A for the radiator fan and ignition system
- 40A for starter and main power relay
When replacing or inspecting modules, disconnect the negative battery terminal. Use a plastic tool to lift connectors and avoid metal contact to prevent short circuits. Keep track of each connector’s location with a photo or labeled note.
Regular inspection helps prevent unexpected failures. Look for:
- Corrosion on terminals
- Burnt or discolored modules
- Loose or damaged connections
Test continuity with a multimeter to confirm correct function. Replace any unit that shows inconsistent readings to maintain reliable operation of engine controls, ABS, and electronic accessories.
Finding the Main Underhood Power Panel

Locate the primary electrical module on the driver side near the battery. It is secured under a snap-on plastic cover that can be lifted after gently pressing the retaining tabs.
Check for high-current relays within the panel before touching any circuits. Units controlling the starter, radiator fan, and ignition require careful handling and correct amperage verification.
Use a plastic pry tool to lift connectors and avoid metallic contact that may cause shorts. Keep a clear view of each terminal’s position and note any color-coding for accurate reinstallation.
Inspect the module housing for cracks or corrosion. Replace damaged panels immediately to prevent exposure to moisture or accidental contact that could interrupt power to essential engine systems.