In the early years of Amtrak service, when the Santa Fe was transitioning to a freight-only business, Amtrak was reliant on leased motive power for pulling its trains. The Santa Fe, wanting to differentiate their equipment that was to be used on the new Amtrak trains, began repainting the F7’s destined for Amtrak use in a new “Yellow Bonnet” scheme. A number of locomotives received this scheme, and although their service on Amtrak was brief many of these Yellow bonnets were returned to the Santa Fe for freight use after 1973.
The F7A unit will come with #304 number boards installed. An additional set of #315 boards can easily be user-installed for those wanting to run a multiple-unit lash-up.