Cowl Wire Harness questions

[coupe1942]

I am going to be replacing this harness. I have looked at the Andrews book and although it identifies the color coding of each wire in the loom, it really does not give instructions as to how to best replace the entire loom. I have never had to do this before, so i am just wanting some pointers as to how to best proceed. (I am currently fighting off an eye infection, so please don't' refer me to anything to read. Even this is a challenge at the moment).

1. In routing the loom from the terminal box on through the fire wall and up to the instrument panel, does it require that the terminal box to be removed?

2. Is the loom easier to route by insertion through the fire wall from the instrument side or from the terminal side?

3. Should the ignition switch and ammeter lugs be hooked up at the loom before it is inserted or should the spade terminals be connected first?

On my driver's side of the terminal box posts, there was a broken spade connector. I have no idea as to what the previous owner had connected there though, so i'll be removing that broken spade connector when I get onto this project. That hood seem to be in my way a bit where it attaches to the firewall, but I hope this task does not require removal of it.

Any rate, I understand the color coding to get that correct, but was trying to make sure I didn't start pulling wires and such before i knew just how to best go about it. Unfortunately, this task may have to be put off for a bit, as that eye infection really has me sort of screwed up at the moment.

Thanks for any tips or recommendations/advise. Like say, I have never had to do this task before, but the previous owner of my truck failed to wrap the ends of the horn and simply tossed them inside the engine bay, Of course they touched some metal there and burned up the wiring right on up to the ammeter. The wire seemed too brittle and too risky to not replace.