Hi All. Im new to the forum. not sure if anyone can help me.
I have a 55 plate 1.6 ford focus.
now everytime I turn my radio up and the bass hits the lights dim (headlights, odometer light)
now this is what I have installed at present
105a brand new ford original alternator
a brand new 72ah battery silver calcium ford original
done the big 3 wire upgrade
cleaned up the grounds in boot, headlight earth, and main earths
I have a jvc head unit
A FLI 900S 4 channel amp in 2 channel mode bridged with a 12" edge sub connected to it
if anyone could shed any light on the situation.
would be gratefully appreciated.