How to identify a stdard dash harness from a Rallye?

[migsBIG]

So I was buying some 1970 seats and guy said I could have a dash harness he had a spare of. Had a hand written tag on it saying it was a non-ac Rallye dash harness for 1974 Cuda model. I plan on putting a 1972 Rallye dash gauges in my car I was gifted from my good friend WO. Is there a way to verify it is a rally harness or std? This tag was attached to the harness.

 

[Challenger RTA]

The lay out of the connetions amp,oil, temp and fuel will be grouped togeter for a ralley cluster.

 

[larry4406]

Presence /absence of a tach wire?

 

[Xcudame]

Real easy, three dash light bulb sockets for a standard harness and four for a rally harness. Orange wires. Can't miss it.

 

[Katfish]

Light harness is separate, independent of main harness.