battery and main system wiring - made a brass bar to connect master relay to starter - I like brass better than copper, less corrosion and great conductivity. wired relays with diodes, crimped and installed battery cable. Decided I don't like this arrangement, the rigid #4 cable is putting some stress on the lug going to the master relay, will probably break in a thousand hours or so. Need to order a super flex cable from B&C. Also located and installed ANL 60 amp fuse and made a firewall penetration. We are using 3/4" EMT for this, very inexpensive and solid steel. Need to find some washers for this at the hardware store. Took care of a few other details, trying to get as much firewall work done before attaching top skin.