AMP draw

[Captainfab]

That is so very true. So many people think that when they need more electrical power in their vehicle, that they need a second battery

There are instances where a second battery is needed, but not as a replacement for an under rated alternator

Originally Posted by Marv D

Yeah I went to MSD because I thought you were nuts,, but the 6AL is .7 amps per 1000, the Digital 6 and 7's are only 1.1 per 1000,, How in the heck can they make 60000+v that will knock you on your @$$ over 50 times a second (at 6k) and only draw 6 amps!!!!! Electricity really puzzles me!

Things add up really quick don't they! People don't treat a battery as it is intended,, they think it is running the car. NO!! there called "STARTING BATTERIES" . The cars electrical system is supposed to be self sufficient in that the alternator provides 100% of the power the car needs,, PLUS enough to replenish the battery after you pull 40-80 amps cranking on the starter.

Shogun has some really good tech pages on race car electrical systems. Worth a read before you start stringing wires.......

https://www.shogunindustries.com/cgi...ech/index.html

Before you think ,,, that's for a race car,, not for me. The principle applies!!! don't ignore it.