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Headlight Switch
- Thread starter 174713
- Start date
pauls1150
MOA #24991, south of Los Angeles
Don't know specifically about the 96 GS (per your profile info), but I'm "pretty" sure that your bike has a "Load Relief Relay", which shuts off the headlight while cranking the starter. You can see the 1100RT schematic on the Mac-Pac site, http://www.mac-pac.org/tech/electrical-diagrams/
pauls1150
MOA #24991, south of Los Angeles
Carl - looking for clarity here:
Before installing that switch, did you actually observe that the headlight stayed on while pressing the starter button?
Or is your added switch the European version that allows one to turn the headlight off during the day?
I've found some documentation that infers that the '96 1100GS does indeed have the "load relief" relay factory-installed.
Here's the page from the BMW Repair Manual, see item 4 (open the Word doc):
View attachment Doc1.doc
And here's a picture with a blurb from micapeak.com -
Relay 4 Load Relief
The load relief relay is actuated when the ignition is on and the starter button is not pressed. This means current flows to:
the headlights (through the headlight switches)
fuse 4
fuse 2 (through the right side light switch and ignition switch) and
the instrument backlights and tail and side lights.
Pushing the starter button releases the load relief relay which cuts the current to the above items.
Before installing that switch, did you actually observe that the headlight stayed on while pressing the starter button?
Or is your added switch the European version that allows one to turn the headlight off during the day?
I've found some documentation that infers that the '96 1100GS does indeed have the "load relief" relay factory-installed.
Here's the page from the BMW Repair Manual, see item 4 (open the Word doc):
View attachment Doc1.doc
And here's a picture with a blurb from micapeak.com -
Relay 4 Load Relief
The load relief relay is actuated when the ignition is on and the starter button is not pressed. This means current flows to:
the headlights (through the headlight switches)
fuse 4
fuse 2 (through the right side light switch and ignition switch) and
the instrument backlights and tail and side lights.
Pushing the starter button releases the load relief relay which cuts the current to the above items.
Thanks for all the feedback. I never noticed if the headlight stays on while cranking since I start my bike outside and always during daylight hours. The reason for my inquiry is low voltage when starting my bike is causing the dreaded ABS alternating light flashing.....time for a new battery I suppose.
cjcs
Active member
If you're are just loolking for the ability to control the headlight, R1150rtp and most likely R1100rtp modles have headlight switchs built into the right hand switch pod. Allows the headlight to be turned off completely, parking lights only, or full headlight. I believe it is plug and play.
AntonLargiader
Active member
Not exactly. The euro switch is plug and play, but the RT-P models accomplish this via blackout mode which is tied into the RT-P wiring.
That is correct, the wiring from the right hand switch cluster plugs into the wiring harness on the right side of the fairing bracket.
I had to repair mine fo a previous owner that was trying to modify the turn signal switches.
It was plug and play for the RT-P
I am not sure if the wiring is diffrent or if an RT-P switch cluster would work in a civilian RT.
