OK.
You need to creat the aux circuit first. You will need a 4 way realy, some wire (cable of the amapge you are going to use -> P=IV, so the power (in watts) is = to (I)Amps x (V)Voltage. or I=P/V is the same.)
You will also need a fuse and some connectors.
Take a +ve feed from the battery, put an in-line fuse in it!
Take a -ve feed from the battery
Take a feed from the break light switch (this comes live with the ignition),
The relay has 4 contacts, 2 of them will power a coil, the other two are the switch.
To connection 30 on the relay connect the +ve feed from the battery.
To connection 85 connect the -ve feed from the battery (this is your earth connection and you can use it as the earth for other things too)
To connection 86 connect the feed from the brake light switch.
Connection 87 is your auxilary circuit, this will power any accessories (lights 12v power, gps etc)
You can run the lights directly from the auxilary circuit through a switch if you want (cable from the aux circuit to a switch then to the lights, make sure you connect the earth cable too!), or you can set the lights to come on automatically with low beam (for the fog) by not putting in a switch or high beam (for the driving) by useing another relay and the main beam circuit to activate another relay.
For main beam:
You'll need another relay.
Connection 30 will connect to the aux circuit.
85 connected to earth (-ve)
86 connected by scotch connector to the main beam cable on the bike - the one that gives power to the other filament on the bulb that gives you main beam
87 is the load, or in this case goes to power the new driving lamp.
I guess a diagram would be much easier, if I can get some time next week I'll draw one up.
The f
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