Need help perfecting the budget build hemi swap

It didn't work. The starter didn't turn, silence. The rest of the electrical system apparently works fine. It's the damn seat belt interlock. I asked up on the forum how to get around it. I got some very vague answers, and the general consensus was to run the yellow wire straight to the starter relay, and remove the rest. It didn't work. The rest of the wiring is exactly the same as the 69 Barracuda, which ran fine for years. I don't know how to fix this without a lot of rewiring to emulate the 69 wiring.