No gauge lights or fuel gauge?

[Flywheel]

I have searched and searched. I changed my 74 warning light cluster for an 85 or 86 full gauge cluster. I don't have any back lights after replacing all of the bulbs and my gas guage is dropped below empty. I know it's probably a wiring thing but I'm kinda wiring diagram illiterate lol.  Any ideas would be awesome.  I'm not worried about the other guages cause I have  guages for those already working.

[roundhouse]

The wires changed locations in the plug

We just swapped an 82 cluster into a 77
You have to get the diagram for both and move some wires in the plug

Plus the senders on the engine for temp and oil pressure and different for gauges

[Flywheel]

Ok thank you. I'll check it tonight

[roundhouse]

Ok thank you. I'll check it tonight

I have pics of my home made wiring diagram showing the changes but tapatalk apparently got upgraded recently and I am no longer avail to upload photos?
PM me your email
Maybe I can send em that way

[Flywheel]

Pm sent

[Flywheel]

Got fuel guage working but only 1 blinker and a couple of the lights are working.

[roundhouse]

Did you get my diagram?

[Flywheel]

Yes I used it but I think I have a ground issue.

[Captkaos]

did you get this figured out.  You need to verify all of the pins in the cluster harness first or you could short something out.

[Flywheel]

I ended up finding a cluster from a 75.  Everything is good now.

[Captkaos]

Since the 73-75 version is AMPS it is never really a good idea for swapping things over without pulling every wiring, but since you were dummy lights it should eliminate that issue.  I would think you just had some pins in wrong.  Glad you got it figured out though.