Hi Guys, Like many others I have bought some 12V 2811 modules for candy canes. http://www.aliexpress.com/item/LED-digital-module-WS2811IC-5050-3LEDS-DC12V-input-waterproof-20pcs-a-string-256-gray-scale/578798417.html I have also soldered waterproof pigtails as per sketch below. https://dl.dropboxusercontent.com/u/43251051/CANDY%20CANE%20POWER%20INJECTION%20V1.2.jpg A few questions 1 - Any unforseen issues with the way have I wired up these modules? 2 - Is there anyway to pre test the wiring and soldering from the 4 pin connectors using a multimeter before powering up? 3 - If so what do I look for and how can I do it? I already have the candy canes completely built and am hoping to avoid having to replace any damaged modules should I not have soldered the waterproof connectors on correctly.