I noticed that the 150a alternator has a smaller pulley, did you leave that pulley on to let it spin faster at idle or did you put the stock '87 pulley on it?

I bought a 90a Bosch for the '87, smaller and lighter than the original, and without heated seats should be adequate for my uses, just wanted to get away from the low-voltage idling thing with the A/C on or all of the heated devices. It isn't as much the max. output that is inadequate (it is inadequate though), it's the low-rpm output that is dismal. Extra cycles on the battery.

Why do you want to increase your output voltage? Isn't 14.3volts excessive for a lead-acid setup? My big charger systems only use 14.3v as an "equalizing" voltage periodically, and it isn't recommended for sealed or no-maintenance type batteries as there is too much outgassing / water loss.

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Gone to the dark side

- Jeff