Mercury Grand Marquis 2008-2011

The 270a, 370a & 400a options have 200-205a at idle rpm of 600+ and 270, 370 & 400+a at 1800+ RPM.

These come with the OEM regulator, if you would like a higher voltage you can purchase a bypass regulator.  

Please specify your year in the notes. So we can install the proper regulator.