There both located on the same harness that has the starter bolt ground directly under the oil pressure sender.



Also I noticed two other plugs undone and couldn't figure where it went.


Near brake booster



Coming out from the front end. I'm guessing it goes to the AC?

If any of the plugs go to the AC compressor(can't remember if there was a plug that went there or not) Then I won't need it since I decided to install the motor without AC(never used it, and it needed to be charged).

 

The top two are the oil level sender and the oil temp sender for the old coolant injection setup mazda invented for the rotaries and dropped.

The next photo is the coolant sender under the oil pedestal. Not 100% sure on that though the S4 and S5 engines had a difference in coolant sensor connection types. Can't quite make out in the picture if you have that sensor connected yet, in which case I'd have to go look in one of the 7's and find that wire to be sure


And the next I believe is the AC

NA engine right?

 

cool, forgot about the oil level sender.

1988 NA

Still don't know where the other plugs go.

I got my coolant temp already plugged. Just need to know where exactly that grey plug goes... I can't see anything..lol

 

Ran into another issue haha.

Where does the port go? No the one on the filler neck but the one behind it ?

 

Never mind, found out it goes to the evap, the other "grey plug" is of no use since this rebuilt motor I dropped in doesn't have it.

Still don't know what the plug near the brake booster goes to though. That things always been unplugged.

 

The plug near the brake booster (yellow/ blue stripe wire) has no connection on my car. It is check connector F-39 in the wiring diagram.

 

yup. found it on my car too. Not a thing plugged into it

 

engine looks clean dude