Fiat Chrysler Automobiles (FCA) US is conducting a voluntary safety recall to inspect steering-wheel wiring harnesses in an estimated 1.06 million U.S. Ram trucks. Affected trucks include certain model-year 2012-2014 Ram 1500, 2500 and 3500 pickups and 3500, 4500 and 5500 Chassis Cabs, according to FCA.

In these vehicles, the steering-wheel wiring harness can wear due to contact with a spring. This type of wear may cause a short circuit, which could lead to unintended driver-side airbag deployment, says FCA.

An analysis of warranty data linked to steering-wheel wiring harnesses determined that less than 1% of all such repairs involved unintended airbag deployment. The condition will be indicated by the airbag warning light, which relates to vehicles equipped with an Electric Vehicle Information Center (EVIC), according to FCA.

So far, FCA is aware of two related injuries, but no accidents.

For no charge to customers, FCA dealers will inspect every affected truck and, if needed, tie back its wiring harness and install protective caps on its airbag retainer spring-ends.

Vehicle owners can reach FCA US at (800) 853-1403.