Hello all,
I'm adding headlight relays to my K100 as suggested but have a couple questions.
Online instructions say to use the yellow wire at the headlight socket terminal to trigger the low-beam relay and the white wire there to trigger the high-beam relay. But, my bike (1985 K100) has TWO dual white wires on the same headlight socket terminal. Why two wires there? And which one do I use to trigger the high-beam relay? Or should I use both of them?
Also, it seems like some of these wires at the headlight socket terminal are "hot" even with the key in the off position. That doesn't make sense, otherwise the headlight would be on when the key is turn off but it never was on. Here's what I found with a tester:
Dimmer Switch in Low Beam Position with Key ON
yellow wire (low beam?): 12 volts
white wire #1 (high beam?): 12 volts
white wire #2 (high beam?): zero volts
Dimmer Switch in High Beam Position with Key ON
yellow wire (low beam?): zero volts
white wire #1 (high beam?): 12 volts
white wire #2 (high beam?): 12 volts
Dimmer Switch in Low Beam Position with Key OFF
yellow wire (low beam?): 12 volts
white wire #1 (high beam?): 9 volts
white wire #2 (high beam?): zero volts
Dimmer Switch in High Beam Position with Key OFF
yellow wire (low beam?): zero volts
white wire #1 (high beam?): 9 volts
white wire #2 (high beam?): 12 volts
These readings don't make sense to me. If the headlight socket is powered even with the key in off position, shouldn't the headlight be on too? But it never was. Also, why the 9 volt readings? I checked everything twice and got the same readings.
The wire is all stock and worked okay last time I used the bike. If somebody could explain these things to me so I can properly install the headlight relays, I'd greatly appreciate it.
Thanks!