New Product. The Big Dog 3 distribution block. Has three inputs (high current battery positive, high current ground and low current ignition positive trigger(from a ignition switch). Module has a built in 70 amp relay for the Ignition power outputs. So the Ignition trigger input only requires a small low current wire from your ignition switch to turn on the Ignition relay. The powers and ground inputs get distributed to the corresponding outputs. The battery positive and ignition positives outputs are all fused via the row of mini blade fuses (25amp max fuse). This allows you to have a small, compact power center to wire up many different electrical items. Fuses NOT included. Fork terminals for the output strips are included. It is 6"L x 2"W x 1.5"H. The battery power side can handle up 75 amps and the Ignition power side can handle up to 70 amps. Not recommended for big items like big fans and fuel pumps.