I bought a rolling body s4 FC3S a while back and have been putting it back together over the last year. I have full s5 running gear bolted in to the car and most of engine wiring done but i have run into a massive problem. It turns out the previous owner was running a jc cosmo 13bt in it and so it has the jc underdash loom. Currently I am trying to splice the s5 ignition loom into the jc under dash loom (coming out of fuse box) at the firewall. Does anyone have wiring diagrams of the respective looms at the place i am trying to spice them containing the colours of the wires and what they do so i can try and match them up?