I just removed the injector harness from my 1976 XJ-S and was amazed that the wiring held together even though the insulation crumbled like pretzel sticks. I only had to cut two wires that did not have a connector plug. (I will figure those out later.)

I assume nobody makes a pre H.E. injector harness anymore and my best option is to nail the original injector harness to a sheet of plywood to make my own new injector harness? (Or pay someone through the nose to do the same thing at $100 an hour.) How hard can it be to stick a bunch of wires and connectors together? :-) I will have to do this again on my 1975 XJ-S in a few years.

I am considering wiring the whole thing inside the rather useless air rails (adding new holes and rubber grommets) instead of frying the new wires directly ontop of the engine block. There will be enough stuff left to fry there.

Or is there any part source?

 

I'm sure you can buy one, but I can tell you from experience, that if you are handy at all at soldering, and are comfortable with heat shrink, by all means, build it yourself. I just saw one on eBay NOS for 750 bucks.

 

Do your own.

Time consuming, of course.
Fiddle, kind of.

Satisfaction, priceless.

I have done 7 so far, and one wire at a time works for me.

 

I only paid 750 bucks for the whole car. :-) So wire rolls here I come.

 

Hi Andreas

Or you could PM Forum Member Safari, who is the go-to Guy on here if you don't fancy making your own, who can Custom Build you one with extra long 'Pig Tails'

 

As Grant said it's not difficult one wire at a time.

Pin the old harness to a board and replace 1 wire at a time, in the old days when I did my apprenticeship I used to build marine radios and this is how we made the wiring harness.

If I were you I would cut the connector off the other side of the harness and replace the connector a new one, I would use 2 different sizes like 3way and 5 way or a single 8 way, something like this.

https://www.ebay.com.au/itm/Weather-...0AAOSw~bFWLt~V

 

Dunno if the same, but you can buy the injector harness from SNG. It isn't original but it has all the correct plugs. I doubt there is much of a difference between the PreHE and HE harnesses...

 

I think a lot of us have built new wiring harness including me. I used wire and most connectors from DelCity.net and some harder to find connectors from Mouser.com. Wire can add up quickly to a lot of dollars if you want multi colors. I just used a couple different colors and some colored sharpies and wire tags. Maybe colored shrink would work better.

 

I seem to recall grant used multi colour trailer cable?

 

I think the really important thing is to make the new harness out of the very best heat resistant cable you can find. Also, to fix it to the rail, rather than have it bolted to the bottom of the valley of Death as it was OEM.
Greg

 

Yep, cheap scrooge that I am.

7 core trailer wire = 7 colours.

Red is the common, and then 4 other colours for the injector group split, and the left overs are used wherever your heart desires in the near future.

 

Lots of high temperature resistant colour coded correct gauge wire here at a resonable price...

https://www.diyautotune.com/product/...ness-for-ms3x/

 

Nice.