JW Speaker: 770F-12/48V XD Worklamp - Flood Beam Universal They are NOT cross-compatible

They are NOT cross-compatible

Profile Performance: The automotive aftermarket's best name in LED Lighting and when it comes to demon eyes

Total system reliability is also improved by shielding the main circuit board from the static produced by these high voltage bursts on start up

They are designed to be drop-in LED lights for truck replacements for halogen lights used in heavy-duty trucks like Peterbilt 579/587 and Kenworth T660 models

enjoy the convenience of switchback sequential LED turn signals

JW Speaker: 770F-12/48V XD Worklamp - Flood Beam Universal They are NOT cross-compatibleThe 770 XD improves on the high quality electronics and engineered optics of the Model 700, and puts them into a much slimmer package. As with the rest of the XD Series, it features a polycarbonate housing and lens for maximum protection. Features: A variety of beam patterns available, UV resistant polycarbonate lens, Universal mount, Vertical oval version available (Model 771 XD).