I have 2 kicker CVR daul voice coil 10's ran off of a 800w phoenix gold mono channel amp. I am running it off of a HI-Low converter right now. I have 4 gauge power and ground wire. I sanded the paint off of the seat post and grounded there. My light dim out horribly bad when i have it turned up at all. any suggestions that might fix this? is it the HI-Low converter?