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While making rev.2 brackets for the headlight (rev.1 shown below) I started wiring it in. The wiring is simple, just use three 1/4" male spade connectors and plug them into the stock plug, join 1 of each of the wires form the high and low beam bulbs together for the ground... that is to say you have 4 wires, 2 for each bulb, put one wire from each bulb into the same spade connector (for the ground) and then 1 wire for low and one for high.
Now for the high/low beam mod...
You can use it wired like this, BUT the bike is wired to give you EITHER the high beam OR the low beam but not both at the same time. This is a problem 'cuz the Blitz doesn't make much light. To counter this I'm going to aim my light low and modify the wiring to run both lights when I put the high beams on. This way when I'm out in the sticks I can run both lights and not piss off on-coming drivers.
Basically what you need to do is...
Get an automotive quality SPST relay (SPST = single pole throw) from Pepboys or equivalent (~$5). The relay has 4 terminals, wire them as follows, the package will tell you which terminal is which...
Trigger terminal 1 - ground
Trigger terminal 2 - high beam plug on harness
"High power" (AKA switched) terminal 1 (input) - low beam bulb and 12V+ from switched source
"High power" terminal 2 (output) - high beam bulb
The low beam wiring off the harness is not used as the bulb will be powered from the relay input terminal, the high beam wiring off the harness is used to switch on the relay and send power to the high beam bulb WITHOUT turning off the low beam.
Now for the high/low beam mod...
You can use it wired like this, BUT the bike is wired to give you EITHER the high beam OR the low beam but not both at the same time. This is a problem 'cuz the Blitz doesn't make much light. To counter this I'm going to aim my light low and modify the wiring to run both lights when I put the high beams on. This way when I'm out in the sticks I can run both lights and not piss off on-coming drivers.
Basically what you need to do is...
Get an automotive quality SPST relay (SPST = single pole throw) from Pepboys or equivalent (~$5). The relay has 4 terminals, wire them as follows, the package will tell you which terminal is which...
Trigger terminal 1 - ground
Trigger terminal 2 - high beam plug on harness
"High power" (AKA switched) terminal 1 (input) - low beam bulb and 12V+ from switched source
"High power" terminal 2 (output) - high beam bulb
The low beam wiring off the harness is not used as the bulb will be powered from the relay input terminal, the high beam wiring off the harness is used to switch on the relay and send power to the high beam bulb WITHOUT turning off the low beam.

