https://www.ledlight.com/load-equalizer-3157-t25-warning-canceller.aspx
LED Load Equalizer 3157 Warning Canceler B Type Socket - Automotive - LEDLight
3157 load equalizer, Fits T25 socket, 6V or 12 VDC systems, eliminates the hyper flash, because the vehicle does not see the LED light. CE and Rohs listed....
led load equalizerwarningbtypesocket