BThunder Heart Performance Electronic Harness Controller - D Model EA4250D ReviewbP PP Thunder Heart Performance Electronic Harness Controller - D Model EA4250D PCompact design makes it easy to hide on a custom motorcyclePPerforms all fuse, relay and signal canceling functions in one simple packagePAllows a dual-filament bulb to be used in three ways: tail, brake and turn signal (excluding the need for a center brake light)PWeather-resistant connections for trouble-free use in extreme environmentsPTrim-to-fit harness allows installation on most custom bikesP