I removed a sweep dash from my 70 with the plan to install aftermarket gauges/Covan insert. To that end I also bought a Painless harness that is somewhat set up for GM cars. Now I've decided not to use my Covan stuff and to go with an SS dash with gauges. Looking at the back of the SS dash I see the factory setup uses the Printed circuit sheet. Can I wire directly to the various gauges and lights so as to eliminate splices and the printed circuit or do I have to cut behind the big main plug (flat brass blades on both sides) and splice into that? I've checked about a 100 posts on here and am still confused.