That would be a "bayonet" style base but there are 4 versions of that base. A BA15S, pins straight across from each other, single contact. A BAY15S, pins across from each other but offset, single contact. BA15D, pins straight across from each other with dual contacts. A BAY15D, pins across from each other but offset, with dual contacts. DO NOT put a single contact bulb in a dual contact socket, it will short and blow your fuse.
2014 Palomino Puma 25RS
2011 F-150 Super Crew XLT
Days camped in 2014 - 23
Camped 2015 - 47
Camped 2016 - 51 done - 6 more planned so far