project06tj

iTrader: (1)

I've just about finished wiring up my engine, but there is one wire that is confusing me.

I've identified it in the harness picture as the coolant level disconnect, however I have no idea where it goes, as I have the coolant level SW wire going to the sensor on the front of the thermostat housing.

Can anyone point me in the right direction?

milano maroon

iTrader: (1)

there should be a connector that this will plug into on the engine (alternator) harness.

project06tj

iTrader: (1)

that wire is from the harness, I can't find what it plugs into.

milano maroon

iTrader: (1)

https://www.rx7club.com/attachment.p...7&d=1268925531

look for the connector labeled "to emissions harness" in this picture. it should connect to the one labeled "coolent level disconnect" in the picture you attached to your first post.

project06tj

iTrader: (1)

that was it, thanks for the assistance, and the diagram.

Wargasm

Thanks for the diagram - I was on here looking up that *exact* connector and here was the answer.

I figured it probably went to something still in the engine bay, but it's nice to not have to worry about it now. My car is so modded that half the connectors aren't hooked up - making it difficult to make sure that you actually got all of the ones you still need connected

turboIIrotary

iTrader: (9)

Does anybody know what that connector does? I had mine disconected for a while now and it works fine lol.

Wargasm

If I am looking at the right thing in the manual....

The low coolant switch is mounted in the water pump body and connected with a single-wire plug to the emissions harness (the big wiring harness on the engine).

From there, the wire goes over to the black single-wire connector referenced above and connects to the engine harness. From there it bounces around more and ends up activating the low coolant alarm on the dash.

The problem with this idea is that your low coolant alarm should be constantly going off if I'm right because it will see an open circuit (not grounded) and will think the car is out of coolant. But you say your car is fine with that wire disconnected....

See page A-13 in the 1994 manual and page Z-42 in the 1994 wiring manual.

I dunno maybe I'll look on my car tomorrow

NEWGENRX7

Did you figure it out? I think it goes by the powesteering side. Just check all your wires on the passenger side.

RMRanger

iTrader: (1)

Sorry for bumping an old thread, but I've been troubleshooting why my add coolant buzzer goes off constantly and finally found the problem: the coolant level sensor isn't connected Of course it's connected at the sensor side, but it's not connected at the other side. The sensor wire goes up into the emissions harness, then comes back out on the other side, into an empty plug. It's a small single-wire plug, black in color. The wire color is black and red (brown? hard to tell). I believe it to be the same wire as the OP listed as "Coolant Level Disconnect". Here's the connector, you can also see where it splices into the other harness:



Problem is, I'm not particularly familiar with the wiring on these cars, and I have no clue where to find the connector labeled "to emissions harness" in the diagram milano maroon posted. Any suggestions on where to look? "Check all your wires" sounds like a good idea but there are a lot of wires over there, I looked over it and nothing was obvious...

Edit: I've been looking through the FSM, at the wiring diagram section, and I don't think it makes sense for this to be a black and red wire, as far as I can tell. Assuming this is the wire for C1-07 (P. Z-44, instrument cluster) it should be solid black. It is up until a certain point, until it becomes this black and red wire. I'm half wondering if this is even the right wire for the job? I know it connects to the sensor because I tested continuity using a multimeter. Strange.