These are not direct links as they disappear all too quickly on ebay, but the search terms you need to identify the terminals.

For the AMP connector into the FICU: Junior Power Timer 927856-2



For all other terminal housings (MAF, ECU, injectors, temp sensor etc.): Junior Power Timer EV1



Just to complete the list, an earlier and still valid link for the instrument panel terminals: https://www.k100-forum.com/t1617-connector-for-the-instruments-k75-k100.

I have never bothered trying to identify the round terminals that BMW use in the connector blocks from (say) the handlebar switches to the main loom because almost any type of block connector will do at these points. I have used almost exclusively Molex terminals in the past, but recently some of the stuff coming out of China in 'selection boxes' has been up to usable standards.

Thanks for the links!!!

Now all I need is a link to the tools for crimping and removing them from the connector block.

Search Ebay for the term "4 in 1 terminal crimping tool".  This will bring up listings for a matching crimp tool with interchangeable blades that handle a variety of insulated and non-insulated terminals.  For removal, a simple flat-blade jeweller's screwdriver works.  Select one that is small enough to fit between the housing and terminal but strong enough that it won't break or bend when you lever it against the housing.  The trick is to bend the vampire tabs on the terminal inwards so that the terminal is no longer locked into the housing. In Dai's first post, you can clearly see the vampire tabs on the terminals in the second photo.

Back in the 70's when I worked in the controls business we had tools that were basically a tube that slipped over the pin or socket and compressed the tangs while pushing the pin out of the connector.  Super fast and didn't bugger anything.  Wish I hadn't thrown my collection away.

All I can remember was that we got ours from the Amp salesman.

I think your memory is presenting you with circular (Molex type) terminals - I have two tools of dfferent sizes for pushing those out. For flattening the tangs (Rob's vampire bits!) I've ground down a small screwdriver so that it fits into the release slot in the terminal block.