Join Date: Feb 2010
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Red Battery Light / Alternator?
My red battery light is on my dash and is lit. Both batteries are brand new so I don't think its them. The truck always started right up and after letting it sit overnight it cranks for longer now.
1. How do I test the alternator?
2. How easy is it to replace the alternator my self?
3. Which one should I get. Is it better to go the with the larger old 3g case instead of the new 6g.
4. How many amps should I go with. I run alot of stuff like amps,100 amp compressor and other stuff. I guess Heavy duty over standard duty cause the diodes in the bridge rectifier.