- Installation Video: How To Install ProBEAM Solid Amber 1157 Bullet LED Turn Signals for Harley Davidson Motorcycles September 15, 2020 13:37 Updated How To Install ProBEAM Solid Amber 1157 Bullet LED Turn Signals for Harley Davidson Motorcycles Related articles - Installation Video: How To Install ProBEAM® 1157 Bullet LED Turn Signals for Harley-Davidson® Motorcycles - Installation Video: PB-AW-1157 HARLEY DAVIDSON LED PROBEAM INSTALL & REVIEW - Installation Video: How To Install ProBEAM Amber/White LED Front Turn Signals for Indian Motorcycles - Installation Video: How To Install ProBEAM Rear Red Ring 1157 LED Turn Signals by Custom Dynamics - Troubleshooting: BCM Turn Signal Sync