I've done lots of research, on TE/AMP micro timer terminals; it has been a challenge, to always perfectly identify, which ones I need and the right crimp range, for the wire you use.
Have you found, a solid crimper for these and weather seals? I'm seeming cheap versions, some Chinese ones with removable dies and then oem by TE Connectivity, Knipex and what seems to be the primary German oem for these oem tools, Rennsteig PEW12 based crimping system. The oem factory grade crimpers; can cost hundred to thousands of dollars; some Chinese knockoffs are cheaper but I haven't tried them.
Some pages online (like VWVOTEX/TDICLUB), have cross referenced the VW and Te/Tyco terminal part #'s, which makes it a bit easier.
My wiring harnesses in my engine; fuel injection and many other areas on my VW, are really deteriorating and living in the desert of the South West, hasn't helped any. I have been on a long term research and repair project. It has been time consuming; figuring out, how to renew these and find the correct oem, terminals, tooling, plug housings and upgraded wire.