So admittedly, I am terrible with electronics. Before I begin probing and prodding away I thought I would turn to the forum and ask what these 2 sensors are on the front of my coolant neck and also if someone could help me with what harness is my injector harness as I see grey and black connectors and I need to re-pin them for the ID injectors I have installed.

here are some pictures


black or grey are my injector connectors?

what are these 2 guys for, they are both worse for wear and if they are important I may replace them


don't worry about the block of wood under the intercooler, I just put it there to mock up the height I want it at.

 

Someone correct me if I a wrong, but I believe black are your injectors.

The two blue connectors are, what looks to be, an aftermarket water temp sensor that you have threaded into your housing.

 

Good reason to label your wires. Use the wire colors and FSM wiring diagram to determine what connectors are for the injectors. My secondary injector connectors were grey. I just replaced them.

Also - look into an air pump delete idler pulley in the near future. Ya don't have enough wrap angle on that WP pulley. Can cause all types of problems.

 

injectors are grey sumitomo's from what I've seen
OP check out this file if you don't have the factory electrical manual
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/wiring-connector-master-guide-1129705/

I agree with Briansfd, there's an extra sensor in your water pump housing
The 2 black ones are likely for the sequential/emission solenoids - def check the color wires and go from there

Look like B1-31 turbo 2 control and B1-34 charge relief solenoid but def check the wires colors off the manual for your year. I used a 94 schematic

 

Thanks for the advice. Like mentioned in the opening post. me and wiring dont get a long so I doubt the manual will be able to help me. I look at wires and diagrams and go crossed eyes. I should have marked all of these and I typically do, but I had some friends over who tore this car down and I was still looking for the leaver to pop the hood. While again I shouldn't have let it happen, I was excited and they are very knowledgeable I just didnt realize I would be left scratching my head when it came time to re assemble.

I also appreciate the hint on the air pump pulley, ill probably pick one up and that also probably explains why the belt squeals. This car was neglected and I am pretty excited to bring it back to life, I am getting there with new fluids, tune up, new injectors and rails, just have to finish the fuel line to the pump and the pump setup and then ill be able to turn it over and see what I really need to fix haha.

 

This thread should help you, it has a diagram of the engine connectors with the wiring colors and the legend for the colors just below. https://www.rx7club.com/3rd-generati...arness-879345/

 

I recently completed relocation of my green twin (turbo pre-control / wastegate) solenoid valves. Rather than hacking-up the harness to splice-in an extension, I hunted-down the connectors here: Connectors
I ordered the 2- position Econoseal connectors here: Econoseal

I believe these connectors should work for some of the other 2-wire connectors in the harness.

 

Good googling to find the econoseals, Amazon has some, and mouser has a bunch as well. There are quite a few shared connectors in the emission harness. The right crimpers can be difficult to find, but eastern beaver is a great resource. I use a GM weatherpack crimper and it does really well - save for the connections to the ECU, they just need to be squeezed a little with pliers after crimping to fit the B1-01 yellow connectors.