If you want to power your GPS straight from your moto (alleviating using batteries in your GPS), hardwire it to your moto. This device alone will work on any bike that has a battery (electric starts, HID lights, etc.) A simple solution at a small price. 
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If your moto does not have a battery for hardwiring your GPS, this converter plus the hardwire kit will make it feasible for 12 Volt devices. 
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If your moto does not have a battery for hardwiring your GPS, this converter plus the hardwire kit will make it feasible for 15 Volt devices. 
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