Electronic flasher operates regardless of load, number of lamps, LED lamps, or trailer lights.
Direct plug-in replacement.
1999 and later is 5-pin flasher for both turn signals and 4-way hazard lights.
1998 and earlier is 2-pin flasher for turn signals or for 4-way hazard lights.
Note: Two flashers are required for 1998 and earlier Hummer / H1 vehicles.