I have found the s5 ecu connector terminals.... Years ago I was trying to find them, and again I couldn't find them by searching. After rats ate the wires so close to connector on a s5 t2 that sat for 10 years, I figured it's best if I replaced the terminals instead of soldering with only 10mm of leads.

I have just ordered these from Mouser electronics and they are planned to arrive in two days, so I will follow up with this post. I just figured this is valuable information to those who need to repin their engine harness.

Mouser PN: 173716-1
Mouser PN: 173630-1
Mouser PN: 173631-6

173716-1 are the smaller terminals (Found PN through searching the 3rd gen section)
173630-1 and 173631-6 are almost identical, but are used for either 1.3-1.9mm wire or 2.0-2.6mm.

Note the -2 configurations are gold plated.

Catalog is listed here: TE Connectivity Automotive terminals catalog

S4 ECU connector terminals are different and can be found by searching this forum.

 

Nice. Gonna put some of these in my next mouser order. Appreciate the info!

 

Reporting back that the pins listed above from Mouser Electronics worked perfectly. They are exactly the same as originals. You'll see a combination of gold plated terminals and standard silver color (I think just for the small ecu pins). Just popped the old pins out, and popped these ones in after crimping wires in. Double check as to which you need, but these are so inexpensive I just kept an extra ~30 on hand of each.

For the larger terminals, there seem to be 2 sizes as I listed above. The terminals are listed by wire diameter as shown in the catalog shown above.

I did not use a correct crimp tool as right now I'm just fixing this harness to check the health of an engine before pulling from the chassis. But it is still possible to crimp without the tool, just not recommended. If anybody knows the correct crimp tool, please post it for future reference.

Thanks mates.