If you are really worried about the amperage draw of the amps, you could install a second alternator(high output) to run the whole system. Stinger makes kits for just about any vehicle. A lot of high output alternator go up to around 250 amps. But leave the factory alternator to run the vehicle. Have the second alternator run a second battery, like a yellow top that was referred in the post before this one. Then the system ran of the yellow top. You won't have any problems with that setup. No lights dimming or b.s..... and a dedicated alternator and battery specifically for the system.