Under the hood near the air compressor. it is mounted to a bracket on the rh side. it will look like a square box aprox. 1 inch square. 2 Relays will be mounted side by side will be green or brown at the base with a black plastic upper cap portion.
Lincoln Navigator suspension compressor relay switch is located on the firewall. The switch will be on the passenger side of the firewall.
how you find a air suspension relay in a Lincoln navigator
the relay for the air suspension is under the hood in the fuse box and its number 4. I just changed it on mine.
The suspension compressor relay on the 1995 Lincoln Continental is located under the hood in almost the exact center of the vehicle just under a smaller relay. It is at the front of the car, just look for the fan shroud and the relay will placed in between the two fans closer to the top.
the 2001 is behind the passenger side headlight
The front relay is on the passenger side kind of hidden but you'll find it on the upper front right side on the passenger side.
Under the hood, black box, Fuse #12 also has relay (#4)
The air suspension relay on a 2003 navigator is located on the passenger side where the compressor is on the front bottom near the fog lights.
how to replace air suspension compressor
The air ride suspension relay is above the right cooling fan right in the middle of the hood crossover (above the radiator)
The 1999 Mercury Grand Marquis air suspension relay switch can be found on the firewall in the engine compartment. The air suspension relay switch will be on the passenger side of the firewall.
In a 1998 Lincoln Mark VIII : In the Power Distribution Box ( which is " live " ) located in the engine compartment ( # 29 is a 40 amp maxi fuse for the Blower Motor Relay )