My F125 journey

[HPsauce]

The replacements are for the 5HP19, which is smaller, so the cable is shorter than the one for the 5HP24.

Pretty much the only option is to cut and splice the wires.

Next time I pass the garage (when its open!) I'll pop in and see if the mechanic can explain what he rerouted and where to get the loom to reach around a 5HP24 to my much shorter F125 cable. Useful information to share if I can understand it!

[HPsauce]

Just another little update. Since getting the car back I've only been doing relatively gentle local runs, including ferrying a disabled passenger so no pushing the boundaries.
That said, it's been driving very smoothly, which it hadn't been for some time, so I suspect the old F125 had been upsetting/misleading the TCU for ages whilst not quite triggering limp mode.
But today I had the opportunity of a near 100-mile round trip mainly on quiet country roads. All working very much as it should now.

A little lesson here: If you think the gearbox is behaving a bit oddly cast a glance at the DIS and see if the selected gearstick position is highlighted clearly. If it's not, or is flickering, that may all be down to a failing F125.

[HPsauce]

Good find. That will probably do the job.

Sadly not, I didn't do my research, 10-pin VAG plugs come in different sizes! DO NOT BUY THIS!

WrongPlugs.jpg

It looks like this cable used connectors 1J0 973 735 and 835 whereas I think we need 1J0 973 715 and 815.
Does anyone have the means to check for sure?

If that's correct, make up your own for less than £4, probably easier than splicing: https://www.aliexpress.com/item/10000377592065.html
Or join prewired ones for slightly more: https://www.aliexpress.com/item/1005004707562199.html
If you decide to order either of the above just note that you need probably to order 2 items, 1 each of male and female.