I put this lamp on my neighbors riding lawnmower, he is 80 YO and drives it around the neighborhood. Install was easy but had question about one unidentified wire in the instructions. The help desk answered it and the light works great. Even though the voltage varies with engine RPM the DLXT operates the patterns just fine but the brightness varies a bit. I even installed a pushbutton on the dash so he could change patterns on the fly. I think I will purchase a few to supplement the emergency flashers on my van. Great product!