Lol I'm a dumbass and forgot to insert the link

econoLED Waterproof 5V 2.1A USB Charger Socket Motorcycle Handlebar Handle Bar Clamp Power Adapter Charger USB Charging System with Cigarette Lighter Power Port Socket for Phones GPS Tablets https://www.amazon.com/dp/B00FR2JF0W/ref=cm_sw_r_cp_apa_i_LpJMCbTAHA2XH

Here is a switched one with a volt meter:

BlueFire 5V/2.1A Dual USB Charger Socket Waterproof Motorcycle Handlebar Clamp Power Adapter Charger USB Charging System with Cigarette Lighter Socket and Voltmeter for Phones/Tablets/GPS https://www.amazon.com/dp/B075D8C565/ref=cm_sw_r_cp_apa_i_fqJMCb13W6CC0

This is the one I use. They are all basically alike just depends on what functionality you want. I cut probably 3 feet off the leads to install it on my drz, probably 4' total I'd guess.

https://www.amazon.com/dp/B00FR2JF0W/ref=cm_sw_r_cp_apa_i_LpJMCbTAHA2XH