Fuse box testing

To my great surprise I found that most of the functions on the fuse / relay board worked first time.

In the end I seemed to definitely only blow one fuse, and that was due to my clumsiness with the test wires.

A little bit of rework was needed due to some swapped wires and poor connections, but it all seems to work now.

Next task is to do a trial run fitting it into George, once I get it to work I will either redesign it smaller and neater or just leave it for a while until I get the engine running.

I do think I have missed something though. I will let you know when I do.

Fuse box construction

Tonight I have finished the first attempt at the fusebox. Such a simple word for a complicated thing.

Anyway here are some pictures of the finished article. The mounting board as you can see is a natty chopping board. The benefit of which is that it is non conductive and fairly easy to cut.

Fuse box, switch out connections at bottom

Fuse box, power out connections at bottom

Fuse box, rats nest

The basic idea is that all major things are controlled by relays, 15 in all (2 are in the dash for the blower and windscreen wipers).
The controls switch to earth with the exception of the brake pedal switch which has a loop out and back.
The fuses are split into two groups, permanent live and switched live, the key relay dealing with that.

The starter relay also is designed to turn off most circuits while it is energised. This feature is extended by the addition of the 'wading' switch, which can be used to turn off the cooling fan, lights and other things that won't like getting wet.

Although the rats nest looks bad currently, it is like that as I want to remount things on another board as a final design. Having thought about things a bit more there are some layout issues I want to fix.

Next step is to test it and try to plumb it in.

Prizes for guessing how many fuses get blown.