This is my personal viewpoint and will probably be dismissed by others, with that said the additional load on the electrical system is pushing the capacity of the 20 Amp line. So I ran another 20 Amp power line (12 gauge wires) from the battery to a multi fuse block I installed under the dash. I connected the stereo, the bow HB 898, the dash HB 798 & 998, and the cellphone charger. This cleaned up the electrical power and reduced the electrical noise from bilge and livewell pumps going to the graphs. This also gives me a way to add anything in the future.Something to consider???