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 Minimum power wire size? 8 or 10 ga? I have the 447HPC2 and I'm looking for the communication cord. When I talk into the mic it makes all of the gauges on the dash go haywire. When i key up on channel 19 it changes to 00 and 2.1 trying to figure out what this means and if it's good or bad.. SR-447HPC2 Manual Comments 0 comments Article is closed for comments.