Posted by Vaughn [99.104.70.146] on Sunday, August 11, 2013 at 22:07:38 :
In Reply to: mystery M37 component posted by Doc Dave [70.192.197.213] on Sunday, August 11, 2013 at 15:06:54 :
If the truck uses four pulley grooves for 4 belts, on the fan and generator, it's a 100amps, 28V system that uses a regulator (bottom)/rectifier (top) component, which is different looking than the stock regulator. Picture indicates regulator/rectifier part.