BA15S BA15D BAY15D lamp holder BA15 Single contact 15mm base Double contact BA15D Lamp holder high low side - AliExpress
RSSW1156
BA15 base Wired Sockets * Single Contact Single Intensity (BA15S) for 1156 bulbs * Dual Contact Single Intensity (BA15D) for 1142 bulbs * Dual Contact Dual Intensity (BAY15D) for 1157 bulbs * 15mm Bayonet Base wired sockets * 5 1/4 inch
Lot of 5 NOS Wired Bayonet Bulb Socket BA15 (1076 1176 etc) 75W 2-Hole Bracket | eBay