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Decoding a GT/CS Tail Light Wiring Loom

One of the rarest, most unique parts on a Ford Mustang GT/CS is the tail light wiring loom harness.  It has a purple tag near the passenger side (right hand side) tail light in the trunk.  This tag has the FoMoCo label and the letters “SXR C8ZX-14405-A”.  Here’s how this part number is decoded:

C8 = 1968
Z = Mustang
X = Ford special or experimental
14405 = Vehicle engineering number

A standard Mustang tail light wire bundle part number is C8ZZ-14405-E or C8ZB-14405-E.  The GT/CS has the “ZX”, which is the code for the special edition Mustang.

Decoding, How-to guide
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Decoding a 1968 Mustang California Special

All GT/CS California Special Mustang VIN’s began with the vehicle identification number prefix “8R01”.

Here’s how the prefix is decoded:

8 = 1968

R =  San Jose, California assembly plant

01 = Designates the Coupe ( hard top) body style.

The next digit in the VIN # is the engine code.  All GT/CS cars could have been equipped with the following engine options:

T = 200 6 cylinder
C = 289 2V
J = 302 4V
X = 390 2V
S = 390 4V premium fuel
R = 428 4VCJ 4 bbl

GT/CS consecutive VIN numbers begin with unit #119,000 and ended with GT/CS and High Country Special (HCS) #172,000.  Most GT/CS’s were produced randomly in the assembly line-up with other Mustangs and Cougars.  The highest concentration of GT/CS production occurred between February 15-20, 1968.  This was primarily due to a massive wholesale dealer event in Los Angeles, California.  By July, 1968, all California Specials and High Country Special production had ended and was phased out.

Decoding, How-to guide
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