How to Troubleshoot & Replace Whirlpool AP7216886 / W11683242 Refrigerator Led Light Module Kit

There are five LED's in the ceiling and two along each side of the refrigerator compartment and one in the freezing compartment of which (throughout my ownership of my French-door KitchenAid refrigerator) I've replaced three. The LED's are wired in series (akin unto old-time Christmas tree lights), such that when one goes out, all in that circuit are also out. The freezing compartment light is on a circuit with the two along each side of the refrigerator compartment, so that when it malfunctioned, none of the side-lighting in the refrigerator compartment functioned. The most recently malfunctioning LED was in the center of the refrigerator compartment's ceiling, which is in series with the two LED's on the right of the refrigerator compartment's ceiling. The new "LED light module's" packaging instructions advises that one is to "jump" each light in the circuit to discern which is causing all LED's in that circuit to malfunction; however, there exist no external contact points on any of the LED's--complicating that endeavor. Some LED's have individual connections (and all come, wired as such), while others are continuously wired, in which event one must cut the connection and splice the wires with the (two) provided splices. However, the wires are exceedingly short, which calls for either great dexterity, a helper or three hands: One to hold the two wires in the splice, one to hold the splice and one to close and crush the splice to effect continuity of electrical contact. It's all easily accomplished, if you've done it before--or if you inquire of Appliance Parts Pros' very helpful problem solvers. 

LED lights went out. These are wired in series; so you will need to find the one that failed. Not all failed. One failed taking out 4 LED lights. 2 in the fridge and 2 in the freezer portion. It's ran in series where all comes on even if only one door is opened. 

Purchased parts from you and repaired myself. Easy to install & locate correct parts. On a side note, I was out of town when the parts arrived on time but some miscommunication in our house led me to believe the parts never arrived. I contacted you and with in an hour was told new parts were being shipped with an apology. It was at that time I realized we had the parts and immediately contacted your rep via email to explain. Your service is EXCELLENT! Thank you. 

All the lights were out in the freezer and only one was in the fridge. In the freezer, all but one showed some light from the LED but it looked like there was a significant voltage drop. One light was completely dead. Replacing that bulb brought them all back. 

Bought two replacement modules, just in case The lights are in series and probably have some design defect/manufacturing defect. This is the second time in 5 years that I have had to do this. LED lights in a low-use setting like a refrigerator should last forever. I changed the first unlit module; still not working. I changed the second module; they all work now. The part is expensive for what you get, a very unreliable product made in roc. I'll probably be using the extra module I bought next year. 

Replaced the light module inside the refrigerator. Looked at a video on how to replace the light. Tried a couple before I figured out the light on the top (ceiling) was the one was the correct light to replace. Once the correct light was replaced, the others worked. The lights are on a continual circuit