Review on Uxcell Automotive Relay Harness Socket Replacement Parts via Switches & Relays by Simon Connelly

A shrunk tail light had to be soldered to my car. I bought these 4 pin universal relays thinking they had some sort of marker or marker to identify which terminal/wire is which. Not correct! Arrived without markings and instructions. It turns out there are 24 ways to connect the four wires to the relay. I tried about ten different options and gave up. I ended up using another 4 pin relay with clear markings showing which pin is which (30, 87, etc.). Hooking up the taillight to that other relay was a breeze and took maybe 15 minutes. As a result, two useless relays. Terrible product. I do not recommend.