Medallion L4-2165cc 22L (1988): Fuel Pump Ballast Bypass Relay
Fuel Pump Ballast Bypass Relay: Description and Operation
The purpose of the ballast resistor is to reduce fuel pump speed and noise once the engine is started. The resistor is bypassed through the bypass relay
during engine cranking. The ballast resistor and bypass relay are located in the engine compartment above and behind the left headlamp.