Wiring Diagram Labels

[Thomas F.]

Can anyone help me understand these labels on the wires on a wiring diagram for an 84 Corvette?

SXL
CXL
Thermo HW
SGX
GXL

Any help is appreciated, thanks.

[William C.]

Re: Wiring Diagram Labels

Essentially they were all descriptive terms for the insulation of various types used in the cable jacket. partial list follows:

SXL-Special Purpose Cross-Linked Polyethylene insulation
CXL-Original designation for Cross-linked polyethelyne insulation
Thermo HW HW indicates Heavy Wall insulation
SGX-starter or ground General Purpose Cross-linked polyethylene insulation
GXL-General Purpose Cross-Linked Polyethelyne

Additionally PVC-Polyvinyl Chloride insulation, generally the major jacket material for auto wiring prior to the 1970's.

[Thomas F.]

Re: Wiring Diagram Labels

Thank you William. I really appreciate you taking the time to help me out on this. I will file this information with my wiring diagrams. Have a great day!