Alternator

[OL-3-TOE]

What is the best way to find out what size alt. you have in your truck? I looked at it and did not see any markings.

[bosshog]

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put your trucks info and look at the alternator section and it should tell you the amperage

[BtyMONSTER]

you could also call the maker/dealership of your vehicle and give them the model information . it also may be written on some of the vehicle info stickers under your hood or engine compartment .

[Kluckin Around]

If u look at your alternator, it is indented in the metal very lightly , but its on there!!

[49]

I would check with a parts company, Napa, checkers, and see what sizes was available. Or check the specs of the car/truck. they sometime list the output on the sticker.