Locate the interior power distribution panel under the dashboard on the driver side before checking any electrical fault. This unit controls lighting, wipers, heater controls, and dashboard indicators. Each slot is labeled with amperage values such as 10A, 15A, and 20A, which must match replacements to prevent wiring damage or repeated failures.
The engine compartment panel near the battery supports high-load circuits like radiator fan, ignition system, and charging components. Check this area first if the engine does not start or major systems fail simultaneously. Larger rated inserts and relay switches are grouped here, and swapping identical relays can help isolate faults quickly.
Use a test light or multimeter to verify continuity instead of relying on visual inspection, since small breaks inside the metal strip may not be visible. Disconnect the negative battery cable before removing any protective element to avoid short circuits and control module damage.
1988 Ford Tempo Fuse Box Diagram Locations and Circuit Functions Explained
Check the interior electrical panel under the driver side dashboard first to trace issues with lighting, wipers, or cabin accessories.
This panel contains multiple blade-style protective inserts arranged in rows, each marked with a number and amperage rating such as 10A, 15A, or 20A, which correspond to specific circuits like turn signals, brake lights, and heater controls.
Use the layout printed on the cover to match slot numbers with assigned systems before removing any component.
Move to the engine compartment distribution unit near the battery when dealing with starting problems, charging faults, or cooling fan failure.
High-current circuits are grouped in this area, including ignition feed, alternator output, and radiator fan control, often paired with relay switches that manage power flow.
Swap identical relays from non-critical systems to test whether a switching unit is faulty.
Check each protective element using a multimeter by placing probes on both terminals; a continuous reading confirms proper condition, while no signal indicates a break inside the metal strip.
Install replacements with identical amperage ratings and inspect terminals for corrosion or looseness to maintain stable electrical contact.
Dashboard fuse panel location and slot assignments for interior systems
Remove the lower trim panel beneath the steering column to access the interior power distribution block, positioned slightly left of the pedal area. Use the cover label to identify slot numbers and match them with circuits controlling interior lighting, radio, turn signals, and climate controls. Keep orientation correct, as rows are read horizontally and misalignment leads to incorrect removal.
- 10A slot – instrument cluster and warning indicators
- 15A slot – radio and accessory outlet
- 20A slot – windshield wipers and washer pump
- 25A slot – power windows and door lock system
Check each position with a multimeter for continuity and ensure replacement parts match the original amperage rating to prevent wiring overload or intermittent faults.