Will my factory power hookups handle this 447HPC2 or would a cigarette lighter plug work better. Shawn March 15, 2017 18:12 Either one will work, the SR-447HPC doesn't draw more than 10 amps. Related articles Can I power the 655 with a cigarette lighter adapter? When I talk into the mic it makes all of the gauges on the dash go haywire. My SR-447HPC2 isn't showing the SWR when I transmit. Low Speaker Volume or Low Talkback Even With Control Set to Max Minimum power wire size? 8 or 10 ga? Comments 0 comments Article is closed for comments.