The Pulse Bar is capable of handling 40A. The WD Electronics system won't take that much and pop the 20A fuse.
I've had that fuse blow, for no reason at all. So I made sure there was nothing rubbing on any of the wires from the Pulse Bar. Found on suspect wire and added more insulation. No problem since.
My General, I added one of these:
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I ran another (+) Red #4 cable from the battery and another (-) Black #4 cable from the battery, or use the frame ground location. This will give you a 100A capable fuse block for wiring all your accessories.
My first was on my General. I bought one for the Xpedition, but haven't installed it yet.
This is another option that I have installed in my Xpedition. The green block in the background shows the connections and the fuses for each accessory added. It uses the #4 cables that I used for the Blue Sea Systems fuse block in my General.
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The AUXBEAM came with cables and circuit breaker to get power from the battery to the AUXBEAM Gang Switch Panel.
I have the panel mounted in the roof liner where it turns down at the front. Easy to see, easy to turn accessories on and off.
A few ideas for ya!!