Finished deburring the top skin and riveted the stiffeners in place. Ran the wires for the stobes and landing light. For the strobes a 5 wire cable, leaving a couple of extra loops at the end for future cuts/replacements. For the landing light, three 18 gauge wires, two for power and one for ground. I run all grounds back to a central grounding block on the firewall...this is best practise to avoid ground loops. There will be 3 exceptions...the fuel tank and sender will get ground locally and the power pack for the strobes will also have a local ground...that's it.