Basic background is I am restoring this car only I know nothing about RX-7s. I chose to dive right in except now there's no one locally who can help me. So I seek your combined wisdom to help me identify a few mystery objects.

Edit: D'oh to add its an 88 Turbo II with an S4 engine.

Linked for size:

http://expert.ics.purdue.edu/~pshaw/DSC00801.jpg

Alright I know that looks like a coolant sensor connector of sorts but WHY do I have two of them?

http://expert.ics.purdue.edu/~pshaw/DSC00802.jpg

What is this and how important is it?

http://expert.ics.purdue.edu/~pshaw/DSC00795.jpg

More Mystery connectors

http://expert.ics.purdue.edu/~pshaw/DSC00803.JPG

Again, help?

Sorry if I come off as an idiot but there's only so much little teensy diagrams can tell you in manuals.

 

the first one is iehter an injector plug witch can also be for the water thermo sensor or the BAC

the second one is the wastegate vac nipple I beleive.

 

2nd picture: wastegate line, see that broken hose directley above where it looks like its heading? thats what plugs in there.

3rd picture: misc test connectors for testing stuff.

4th picture: considering that connector looks like its connected to the HORN, im guessing it might be for the horn.

 

First pic, The connected plug going into the thermostat housing is for the auxillary fan.
The unnconnected plug is the watre thermo sensor which connects to the BACK side of the water pump housing. *edit* just had another look and it looks like you can see the water thermo sensor IS connected where is should be, so 1987Rx7 was right its probably the BAC connector....

Sencond pic, Is definatly the wastegate acutator. That nipple is usually connected to the other nipple on the actual compressor housing of the turbo.

Thrid pic, No idea, they've never been connected to anything on my car ever before
I assume they're for foglights? or some other similar option?
*edit* See the white connector not connected to anything? that is for the elctronic auto adjusting suspension....

Fourth pic, I _BELIVE_ it connects to a pressure switch on the A/C evaporator box to cut out the A/C if the pressure gets to high? thats from my memory, but theres not too many connectors like that in the engine bay so if you find something it plugs into (and i'll bet its for the A/C) then that should be the right one.

 

Just confirming:

1. BAC valve connector

2. Wastegate actuator (don't drive without repairing the hose!)

3. Since it's white, I'd say AAS connector (all test connectors are green). 6-pin plug with four wires?

4. A/C pressure switch

 

Thanks for the replies guys. To warn I'm looking at having this car running by the end of christmas break so I might have a whole pile of questions. It sucks not having other RX-7 around you.