1975 1.8 (L-Jet?) Help!, Vacuum Hoses and Wiring Harness/Components Options

[Nor.Cal.914]

So I've grown tired of the poor and stinky driveability of my carbs and have decided to return to fuel injection. I have a 1975 1.8L, but I purchased another engine for it that was said to be a '75 1.8L as well, but I'm not entirely sure (hence the question mark next to L-Jet in my title). Based off of what I am finding online, it looks to be that it is indeed an L-Jet system. I am new to this system as I got rid of it immediately when I bought the car and haven't seen or touched it since, which was over 7 years ago. I understand how it all works, but I'm having trouble with the connectors, where some things go, and vacuum hoses.

I found a .pdf of a 912 with L-Jet for the vacuum diagram, but it has some smog equipment on it such as an EGR valve and EVAP Charcoal Canister, which I do not have. In this .pdf it also contains a component list of all the things that are used in this system and I think I have all of them. I just dug the whole setup out today so I will have to check on exactly what I have tomorrow, but I'm specifically wondering about where a few things go/are such as the cold start valve (I assume this is attached to the TB or the intake plenum?), thermo time switch (I know I have this but I don't know where it goes), auxiliary air valve (I also know I have this but don't know where it goes), the "temperature sensor II (I have no idea where this is and whether or not my engine has it), and the dual relay which has its own harness (I'm pretty sure the relay I have is junk--the cover is missing and things look tweaked).

Next thing I am looking to find is a vacuum diagram for this engine/fuel injection. I have lots of pieces of vacuum line, lots of nipples, and no idea what goes where. I did search on here to find some already posted, but I could only find one for the 1.7/2.0L D-Jet system. Also, is there a simple way to figure out which connectors go where? More specifically, the male and female spade connectors... I can pretty much figure out where most of the connectors go based off of the number of pins and color/shape. I also found a wiring diagram in that 912 .pdf but I am not sure if the wire colors will match to my engine so that's another concern of mine.

I greatly appreciate the help and thanks in advance for all information!

-Chris