I have a 95 sc400. how you get those pins out of the plug where it plugs into the ECM?

 

There are VERY tiny plastic catches that you can insert a very fine small electronics flathead screwdriver into in order to make the terminal end come free and pull out for service, swapping with another or a full replacement terminal end. Driftmotion carries all of the correct type OEM repair terminals for the ECUs.

 

Where can I find pictures of this?

 

^^ See official Lexus TSRMs attached below.