An earlier post lists 4x4connection as a source. Seems that the 140 amp unit is rather new and may not be listed - try and e-mail w/ specific request.
Ming
I agree w/ the alternator diagnosis but I'm afraid that it's the IC voltage regulator not the brushes that failing. The blinking indicators are classic symptoms of a dying alternator and on FJ62's the weak spot of the alternator it the voltage regulator. Grab a meter or go to a shop and check...