Send power to the correct circuits at each key position with the Standard Ignition Ignition Starter Switch US-273. It is a direct-fit replacement for the 1990-1992 Lincoln Mark VII, the 1993-1994 Ford E-150 Econoline, E-150 Econoline Club Wagon, E-250 Econoline and E-350 Econoline, and the 1994 Ford F-53 Motorhome Chassis. See the "Vehicles it fits" section for engine details.
The ignition starter switch is the electrical switch operated by the ignition key. It selects the accessory, run and start positions, feeds power to the ignition system and signals the starter to crank. When its internal contacts wear, the circuits it controls may lose power intermittently or entirely.
- Quality control throughout: Standard Ignition is a global manufacturer of original equipment ignition products and controls quality at every stage of manufacturing, from componentry to the finished switch.
- Copper alloy conductors: Used for strong electrical conductivity with low resistive losses.
- 100% tested: Each switch is tested to verify both its mechanical and its electrical switching performance.
- Built for professionals: A robust design and high-grade materials are intended to meet the demands of today's service professional and to provide proper fit and function.
Signs this part may need replacing: The engine may not crank, or may crank only intermittently, when the key is turned to start. The dash or accessories may cut out while driving. The engine may stall when the key is bumped, or there may be no power in the accessory or run position. Other components can cause these same symptoms, so diagnose the cause before replacing the switch.
Interchange: CS559 · LS640 · KS6494 · F0LY11572A · F2UZ11572C · SW2477
This part cross-references / interchanges with the following part numbers:
CS559, LS640, KS6494, F0LY11572A, F2UZ11572C, SW2477
Frequently Asked Questions
Which vehicles does the Standard Ignition US-273 fit?
It is listed for the 1990-1992 Lincoln Mark VII, the 1993-1994 Ford E-150 Econoline, E-150 Econoline Club Wagon, E-250 Econoline and E-350 Econoline, and the 1994 Ford F-53 Motorhome Chassis.
What does an ignition starter switch do?
It is the electrical switch the ignition key operates. It routes power to the accessory and run circuits and sends the start signal to the starter when the key is turned to start.
What part numbers does US-273 interchange with?
It interchanges with CS559, LS640, KS6494, F0LY11572A, F2UZ11572C and SW2477.
How is this switch tested?
Standard Ignition states that each switch is 100% tested to verify both its mechanical and electrical switching performance.
What are signs the ignition starter switch may need replacing?
Possible signs include a no-crank condition, dash or accessory power cutting out, or stalling when the key is moved. Other parts can cause these symptoms too, so diagnose the cause before replacing.
