G4 Base Holder Wire Adapter Halogen Socket Connector f. Bulb Lamp LED | eBay
TORCHSTAR G4, GU5.3 Bi-Pin Socket, up to 75 Watts, Ceramic Body with Mica Covers, for LED Halogen Incandescent Light Bulbs, MR11, MR16, Pack of 5: Amazon.com: Tools & Home Improvement
LED bulb G4, 1.5W, 12V, warm white 3000K, 120lm WZ323 | GM electronic COM
Bi-pin LED Bulb Socket Harness for G4 MR11 or MR16 Lamps | LEDwholesalers
"X-Beam" LED Replacement Bulb, Warm White 10-30VDC (2.2W), Directional, G4 Socket
10PCS 20 50 100cm LED lamp G4 socket plug bulb / G4 ceramic bulb holder high quality crystal holder support plug lamp|Lamp Bases| - AliExpress