451410 NAV1663595C91 SWITCH, DIR

It’s a directional switch used as a vehicle control switch for operating a specific function in a truck’s electrical system. As a truck electrical switch, it’s meant to provide dependable on/off or directional control when wired to the correct circuit. Always confirm the circuit function in your truck before installation.

It is commonly referenced alongside the NAV1663595C91 switch number for the same directional switch application. Part numbering can vary by brand or cross-reference, so the safest match is verifying the NAV1663595C91 switch number and connector style against your original. If both identifiers align with your existing unit, it’s an appropriate truck replacement switch.

Installation is usually straightforward for a technician familiar with vehicle control switch wiring and basic electrical diagnostics. Disconnect power, confirm the pinout or terminal layout, and ensure the switch is seated securely to avoid intermittent contact. After installation, test the function under normal operating conditions to confirm the truck electrical switch works correctly.