Check the RGB LED Strip Connector with a single side 4PIN Solderless Connector, the length of the wire is 10-15cm, the width of solderless connectors is 10mm, you can use it to extend the length of the power cable or connect to a LED Controller.
Lucid™ LED Neon Accessories
12V RGB LED Strip Light L Shape 4 Pin Connector – BrightNexLED
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optoelectronics - How does a 4 pin RGB connector work without ground? - Electrical Engineering Stack Exchange
5pcs Rgb Led Strip Connector 4 Pin 5050, 10mm Colorful Led Tape Light Connector For Waterproof Ip65 Strip To Wire Use. - Connectors - AliExpress
This 4-pin solderless transparent LED strip connector is for IP20 Indoor SMD RGB LED Strip Lights and b
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Our 10mm RGB multicolor (5050) LED light strip connectors are a simple, frustration-free solution for all of our LED light strip connection and
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4-pin 10mm rgb connectors for rgb led strips to wire connection