Is there any company who will build a one-off wiring harness to spec? I am imagining giving them a drawing like is found in some manuals where they give number of inches, tee-offs, loom corrugation, wire sizes, colors, type of connector on the ends, etc. Mainly I would like to get this done for certain applications where the connectors are somewhat obscure, I don't want to carry 12 colors of wire in every gauge from 10-18 and also just the time involved in assembling a harness oneself.
You might try painless performance " https://www.painlessperformance.com " I have seen their products on TV quite a few times and it looks like a great setup and clean too. They make alot of stuff for older cars so it may work for you. Never used them myself though.
I have known of them for many years but it always seems like everything you can get semi-custom is still designed for some specific car. I should have made clear, I am looking for harnesses for generator engines and such, which may bear no resemblance to anything before or since manufactured.
We were dealing with a custom harness manufacturer who would build anything if they were given a drawing or an old harness to work to. From samples I saw their quality was at least equal to or better than OEM. I’m on break from work right now and don’t have their details. How much of a rush are you in..?
I don't have a project going at all. It is just something I wish I had had, a time or two. And it popped into my head so I figured I better post it before it popped back out again.
Put it in your diary to remind me around the end of the month. I’ll be back at work by then.
Done
I was looking at swapping c-7 to c-10 or 12 cat and had these two outfits come up: http://www.kustomharness.com/electronic-engine-harness http://mobile.mawkindustries.com/ They primarily deal in over the road truck engines, but I imagine if you had a diagram, they would make whatever you want.
Why not build your own, lay it out on a sheet of plywood in clamps and assemble as noted in your drawing? Last harness I made for a buddy for a Street Show Rod was done that way but WAY simple and no special connectors.
Mainly because I don't want to invest in various tooling, shells and pins for all the different brands of connectors, and I also like it when a manufacturer can make it with various correct colors and gauges of wire that I never have the ability to stock all of.
Had to have a new turbo boost sensor connector for a Kubota SVL90. Dealer said only complete engine harness was available for a couple grand.. After searching for several hours, found one from these guys - not cheap, $100 with shipping for ONE connector but fit exact and came with splices, shrink wrap and plenty wire for the repair. https://connectorexperts.com/
When I worked for the Komatsu dealer who was building logging shovels they had to make harness extensions for raising the cabs. They used a company named Connect-Air. They had all the Komatsu stuff and the price was reasonable. There are branches in California. Here is their web site. http://www.connect-air.com