92KK 84WW Olaf
Life time member
Number of posts : 7955
The relays route the power to the headlight away from the headlight switch which once the relays are fitted only passes the current to activate the relay instead to light the bulb. Given the nature of the K wiring this in itself seems to improve the lighting a little and bring more power to the bulb because there is less resistance. More power is more heat which in theory can cause the bulb plug to overheat and melt a little, especially as it will be old and the connections may not be absolutely perfect..
The ceramic plug also allows fitting higher wattage or higher output bulbs without risk of overheating the plug. They are or should be very cheap, standard H4 bulb connection.
__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles.
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles
Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500