So I said I'd post back when I have made some more progress... so here we go!
I've had a busy couple of years playing with minis, but not found much time for working on my own but recently I've been able to spend some time finalizing the design of my wiring harness. I decided to bite the bullet and pay for some proper harness design software and spent the last two months drawing up the layout, logical connections planning the concentric twisting and pinouts for the inter-harness connections then finally specifying the components to be used. I've also spent some time in Fusion 360 drawing up CAD models of the dashboard & centre console / PJB layout.
Yesterday I finally got full documentation of the wiring and a complete bill of materials for the entire project. I have placed the first of several orders of parts at the moment the cost is somewhere near £3000 not including tooling which I expect to be in the region of a further £1000-£1500. No expenses are spared here on the parts and on the tooling this harness has to be right first time.
For now I thought I'd share some of my cad renderings and harness drawings with you guys, the images are the latest renderings but i have changed a few small details since, firstly i have fixed the dodgy spacing between the rows of switches and circuit breakers also increased the spacing between the top two rows of switches, they just fitted at the 30mm spacing when using generic switches as placeholders but when i got round to importing the cad models of the actual toggle switches i am using i found that they were slightly larger so i have increased the spacing from 30mm to 40mm for the top row.
The harness drawings are an example of the level of documentation required when building a harness of this standard and also when performing any maintenance in the future. the harness sections shown are the Engine Power Harness (EPH) with around 40 logical connections and the Engine Management Harness (EMH) with in the region of 150 logical connections. The Main Chassis Harness (MCH) has over 250 logical connections, its a big job keeping tabs on all of them especially when picking up after a few days! I've not included the planning of the concentric twisting as most of it is just calculations scribbled on paper, this will be digitized and saved with the rest of the documentation upon completion of the entire system, the level of planning required to work this all out is huge and I'm expecting that I may have to change the inter-harness connector pinouts slightly to work neatly with the concentric twisting.
once parts start turning up there will be more updates.