Try to install first the fog lamps and amps. The electrician will measure your charging capacity with headlights, A/C, foglamps and amplifier on.
70 amperes is powerful already. Ako 80 amperes with foglights, stereo at dual pa aircon ko.
Kaya pa yan bro,mine is nkafog light na my strobe light pa pero wala naman problem sa charging,same alt lang tayo.Actualy my 2 amps ko pero my capacitor na pang suporta hehe...