Keep the key-start circuit of your late-'70s Ford working as intended with the Standard Ignition Ignition Starter Switch, part number US-115. It is a direct-fit replacement for the 1978-1979 Ford Bronco, F-100, F-150, F-250, F-350 and B-100, along with the listed E-100 through E-350 Econoline and Econoline Club Wagon models.
An ignition starter switch is the electrical switch behind the key. As the key turns, it sends power to the ignition and accessory circuits and energizes the starter circuit so the engine can crank. Standard is a global manufacturer of original equipment ignition products and maintains complete quality control throughout manufacturing, from componentry to the finished product.
Signs this part may need replacing: The engine does not crank when the key is turned, the engine stalls or loses power while driving, or accessories do not power up in the correct key positions. Other components can cause these symptoms too, so diagnose the cause before replacing the switch.
Fits (1978-1979 Ford):
See the Buyer's Guide tab for engine details on each application.
Interchange: CS135 · IS86 · LS505 · KS6644 · D8TB11572AA · D8TZ11572A · SW1494 · 12329710 · KS6644SB · US115T
This part cross-references / interchanges with the following part numbers:
Which vehicles does the Standard Ignition US-115 fit?
It fits the 1978-1979 Ford Bronco, F-100, F-150, F-250, F-350 and B-100, plus the E-100, E-150, E-250 and E-350 Econoline and Econoline Club Wagon. See the Buyer's Guide tab for engine details.
What does an ignition starter switch do?
When the key is turned, it sends power to the ignition and accessory circuits and energizes the starter circuit so the engine can crank.
What are signs the ignition switch may need replacing?
Signs include a no-crank condition with the key turned, stalling or power loss while driving, or accessories that don't power up in the correct key positions. Other parts can cause these too, so diagnose first.
Is the US-115 tested?
Yes. Standard Ignition 100% tests its ignition switches to verify both their mechanical and electrical switching performance.
What part numbers does the US-115 cross-reference?
It cross-references CS135, IS86, LS505, KS6644, D8TB11572AA, D8TZ11572A, SW1494, 12329710, KS6644SB and US115T.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
