On many older trucks, the stock flasher is tuned for incandescent turn signals, which pull more current than more modern LED turn signals. As a result, when all of the incandescent turn signals are replaced with LEDs, the turn signals may not work properly. Replacing the stock flasher with a more sensitive LED flasher like this one solves most problems.

This product generally will not work on Freightliner trucks. An alternative to a replacement flasher relay is the LED turn signal flasher conversion harness w/resistor.

Before ordering, make sure to compare this item to your existing flasher! They must match in order for the new product to work.