I took out the dash cluster and and after reinstalling I have no working gas gauge. It worked before so I am not sure if there is a connection missing or not. It's a race car so there is some stuff not connected.

It originally had only the volts, tach, and gas gauge connected and working.

Are #1, #2 and #3 connected correctly? What goes on #4?

I disconnected the wiring harness (pic 2) and rewired only the lights to a new switch. Not sure if the gas gauge goes through this connection or not but it is now not connected. I tried reconnected it and still no working gas gauge.

 

The gauge needs to have ground connected. Did you connect ground back up for the harness?

In a stock 7 its straight up, centered behind the cluster and is a small screw into the metal frame
of the dash. In your case I'm not sure what you have.

 

I don't think it is there. I will take a look.

What goes on #4?

Does gas gauge goes through the wiring harness (pic 2) connection?

 

I don't know what #4 would be off hand.

The gauge is thru connector #2 and I think it goes thru that harness connection.

If you go to foxed.ca, you can find all the manuals and look at the wiring diagrams to help figure
it out.

 

Fuel gauge is a Yellow wire with a Black stripe going through one of those round connectors. Not sure which one. There is a Yellow black wire on each of the round connectors. The one you want is between a Red yellow wire and a Yellow red wire. It goes through X-06 which is a 21 pin connector between the front and rear harness and is under the left side storage bin. In the front harness it is Yellow black in the rear harness it is Yellow blue. Is that the other connector you have pictured? I believe #4 is the warning buzzer and #1 is oil pressure. You also need the ground which Tim mentioned already. There is a black ground wire on the correct round plug.

 

Wrong. Yellow black is the fuel warning light. The gauge is a solid yellow wire in the round connector. It is between a Yellow white wire (Temp Gauge) and a Red blue wire (high beams). The wire does go through X-06, but it is Yellow in the front harness and the rear harness.

 

I have looked through the message boards and also looked through the wire diagrams. I am not good trying to figure those diagrams out but did narrow it down to the area I was asking about.

With car power on and wires connected to cluster....

Test light on wire connection at fuel level sender...
Yellow connected to test light = pulsating light
Yellow/Blue = solid light

If I disconnect white connection on back of cluster I get no power/lights on wire connection at fuel level sender. I assume this means that the wire to the cluster is good.

I took out the fuel level sender and I get
2.5 ohms at full
30 ish ohms at half full
When I get to above 60 ohms I start getting no reading on the millimeter. I assume this means that the sender is bad and needs to be replaced.

I did take out the sender while connected and with power, moved the float up and down ad still got nothing at the cluster on dash.

Do you agree that the sender is bad considering that I am getting power at the wired connection at sender? Is there a way to test the stock gas gauge in the dash?

Thanks for the help it has help a bunch already

 

The sender is just a variable ground signal. If you ground the wire that goes to the connector, the gas gauge should move up to Full. My guess is the sending unit, but that will confirm it.