[Pazuzu]

I'm working on a complete redesign of the front fuse/relay panel, trying to get away from high amp systems being fed through the existing ignition switch, getting away from the round Porsche relays which I am not a fan of, and simplifying the wiring to the fuses.

First note...I am not an engineer, nor an automotive designer, nor anyone who has any right doing something like this, so please, if I am doing something wrong please tell me! There might be secrets or basic design flaws to this which I do not know about and I would appreciate the people here who actually do know what they're doing to guide me.

I'm not the first by far to do a new system, nor the first by far to do the first busbar system. However, the front fuse panel is essentially 4 sections:

1) Closest to the front of the car is about 10 fuses that have a simple lead wire going in from a source, and load wires coming out to an assembly. In this case, it's all of the lighting. So, hot wire in from a switch, hot wire going out to lamps. So, lots of wires up top, lots of wires down below, each fuse is completely independent.

2) A few fuses that are powered from the "X" terminal of the ignition switch, which is hot in RUN and START. These are fuses were there is a main hot wire coming into the top, then hot wires going out the bottom to switches, which then send the load to assemblies. So, few wires up top, lots down below, with jumpers tying the fuses together.

3) A few fuses fed by the "15" terminal on the ignition switch, which is hot with ACC and RUN. Again, a main fat feed coming in, some jumpers tying the fuses together, then load wires coming out to feed switches.

4) Basically the same, but this cluster of fuses is fed directly from the battery, instead of the ignition switch, so they are ALWAYS hot.


What that means is, the scary mess of wires around the fuse panel can be split into 4 bundles based on how they are fed. This leads itself to running a busbar type power feed to them instead. 3 main feeds, and a set of individual fuses.