Check the listing for details. 4Pcs 4-Pin GX24Q to E26/E27 Light Socket Adapter CFL G24Q 4P Lamp Base. Color: White, Condition: New. Listed at 12.99 USD. Need Bypass Ballast to Avoid Smoke Flick Burn! Product DescriptionShort Version 15.5mm, 4P ConductiveGx24q to E26 Lamp base adapterSuitable for G24Q-1,G24Q-2,G24Q-3, GX24Q-1, GX24Q-2, GX24Q-3Voltage Workable: 85-265V AC Max 75WMaterial: anti-burning PBT Housing, Copper ContactWorks for 4-Pin CFL with:G24q-1: 10w 13w Quad TubeGX24q-1: 10w 13w Triple TubeG24q-2: 18w Quad TubeGX24q-2: 18w Triple TubeG24q-3: 26W 32w Quad TubeGX24q-3: 26w 32w Triple Tube Allow You Install Standard E26/E27 Lamp into G24Q GX24Q Socket Please distinguish the pin base types: there are G24, 2P 4P, and G23, Gx23 etc. Check your old CFL lamp base so to confirm the existing fixture is G24q or Gx24q socket. If your socket is 2P, pls choose from G24d or G23 GX23 to E26/E27 Adapter below. No Ballast is Required. It is 100% that PL-C down light fixture has ballast inside. THROW AWAY the ballast before install the LED light, otherwise the ballast will make resonance high voltage which destroy the light, reviews like burnt, smell, hot, flicking are all results that not bypass the ballast correctly. Even you are replacing with E26/E27 CFL, you need remove the ballast also. Otherwise, the CFL E26/e27 Lamp will not work on. How to bypass the ballast? 1.Turn Off the Power. 2. Find the Ballast. Usually it is embedded inside the ceiling fixture. Please pull off the existing PL lamp, reflector. Leave wire in junction box,find the ballast. 3. Normally, the Ballast has a black and white wire on the input side (AC input side,100-120V for North America). It also has two red and two blue output wires. To bypass this ballast, please cut all the Input and output wires, so total 6 wires cut. 4.Then you can connect the two red wires to the black wire. 5.Next, connect the two blue wires to the white wire. now ballast is bypassed