The FFR chassis harness has a 12-circuit fuse box, and some of the fused items won't be used depending upon how you are building your project. Circuits like CB radio, tach (we used the tach signal from the EFI harness), A/C, and so forth will not be used on our build. We simply tie-wrapped these extra wires so they could be safely tucked behind the dash, but we also added a short length of adhesive-lined shrink-wrap (also from RJM Injection Technologies) to the end of each wire. We squeezed the heated shrink-wrap shut with pliers to seal the wire ends and prevent any circuit shorts. Next month, we'll wrap up our wiring and hopefully tackle a few other odds and ends before starting on the bodywork.