Good thoughts. Today I ordered a new connector and 4 repair wires.
Rediclous £42 at TPS - I didn't pay so may not go back and instead just get them online. £1.99 delivered from China for the connector from aliexpress with the wires, seals and pins assembled, but alas with thinner wires so would need to upgrade them. I need 2.5mm2 and 4.0mm2 but these are 1mm2 and 2.5mm2. I can get the correct pins from ebay for about £10 for 10 each size and use my own wire.
Good point about faulty ones on ebay sold as working as they were people's old originals- I did think of that and sought one from a car being broken up rather than a one-off sale.
I did test continuity the lazy way via the resistance of each side's pins for hall sender and motor matching left and right but I hope to be able to make up a test cable with my connectors and pop the 4 pins from the ECU plug and replace them with those of my test lead and try this before working on the loom.
Thank you
Attachment 17756
7D0945527 grommet
1J0919231 flat contact housing, connection piece, servomotor 4 pin X;2;2
2.8 mm female flat terminals
000 979 021 (000979021): 0.5mm wire
000 979 133 (000979133): 1.0mm wire
000 979 225 (000979225): 2.5mm wire x2 xxxxx
4.8 mm female flat terminals
000 979 023 (000979023): 0.5mm wire
000 979 135 (000979135): 1.0mm wire
000 979 227 (000979227): 2.5mm wire
000 979 306 (000979306): 4.0mm wire x2 xxxxxx
If anyone's interested for future reference, they are also the parts needed for adding extra blade fuses to vacant positions on fuseholder.
2.8 mm terminals are for the smaller ATM fuse.
4.8 mm terminals are for the larger ATC fuse.