lp 530

billyp

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Jan 5, 2015
Messages
87
Location
Mansfield ma.
Looking for help on wiring Piaa lights.I'm going to mount on crash bars and would like to be able to turn them off and on by the piaa switch.I see the 2 wires that go to the lights and 2 that go to the battery.Where do I use the remaining wire for power.
 

Pterodactyl

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Jun 29, 2015
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255
Location
Helena, Montana
You should have a relay in the wiring harness. Your switch should control the relay which in turn acts as a switch for the lights. The idea is to reduce the power going thru the switch on your handlebars. If you attach the trigger (power) wire to a switched power source on the bike, then the lights will turn off when you turn the ignition off. Not a good idea to power the lights off the battery without a switched relay installed; too easy to leave the lights on and run down the battery. Even better is to draw power for your trigger wire off the high beam circuit. That way your high beam switch will also turn the lights on/off.
 

billyp

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Joined
Jan 5, 2015
Messages
87
Location
Mansfield ma.
If I come off the high beam,does that make it so the lights will work only when the high beam is on.Would like to be able to turn them on and off with the trigger switch.
 

Pterodactyl

New Member
Joined
Jun 29, 2015
Messages
255
Location
Helena, Montana
billyp said:
If I come off the high beam,does that make it so the lights will work only when the high beam is on.Would like to be able to turn them on and off with the trigger switch.
First, I'm not sure we mean the same thing by "trigger". What I mean by trigger is the place from which the relay draws power; this is not the same power source that is used to power the lights. If you use the high beam circuit as your trigger, then yes, power to the lights will be controlled by the high/low beam switch. They will also be controlled by the PIAA switch. If you want to be able to run the PIAAs with the low beam on, then use a different source to trigger the relay.
 
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