Wiring Automotive Fuse Block - Buy Painless Wiring 70207 Aux.Fuse Block 7Circuit: Fuse Blocks - Amazon.com FREE DELIVERY possible on eligible purchases. Buy Sierra FS40440 Fuse Block - Cole-Hersee 46377-14: Fuse Blocks - Amazon.com FREE DELIVERY possible on eligible purchases. With 12-volt panels all wiring is parallel. You simply interconnect all the + and all - lines. You can do this two ways; daisy chain them from panel to panel, with the last panel having the wire that comes down to the solar controller; or with a distribution hub on the roof..