77L Headlight & Forward Light Wiring Harness

Reproduction 1977 Late Corvette headlight and forward lamp wiring harness. Attaches to main dash wiring harness at the firewall and connects to many of the components in the lighting circuit going forward. Connects to the following components:

• Alarm System Horn
• Alternator
• Brake Pressure Warning Switch
• Dash Harness Connection (at firewall)
• Engine Harness Connection (cars without A/C)
• Ground (alternator)
• Ground (to driver side radiator support)
• Ground (to header support)
• Headlights (driver & passenger side)
• Headlight Door Limit Switch (driver & passenger side)
• Horn
• Parking Light Extension Connection (driver & passenger side)
• Side Marker Light (driver & passenger side)
• Temperature Sending Unit

Note: Fits 1977 2nd design Corvette with alarm switch located in driver side door lock cylinder & alarm horn located behind driver side front fender. 1970-1977 Corvettes require use of front park light extensions to complete installation, see Zip # E-422.

Factory wiring harnesses originally supplied with your Corvette had a 10 year service life. How old is your Corvette's wiring? 20, 30, maybe 40+ years. Original harnesses were made with copper strand housed in plastic. Over time the plastic deteriorates, becoming brittle and cracked, allowing moisture to get into the wire, which in turn causes the copper to begin corroding. Corroded wires lead to short circuits with the possibility of an electrical fire. Why gamble on the condition of an old harness to save a few bucks?

Zip provides the Corvette owner with the most correct wiring harnesses available. All harnesses are hand assembled in the USA, guaranteed to fit. Harnesses feature correct wires that match factory color codes and gauge size, but are made with Cross Linked Polyethylene type GXL wire which is much more tolerant to heat than the original PVC type GPT wire. Connections are dip soldered (where applicable) to eliminate resistance loss and feature reproduction connectors and terminals. All harnesses are wrapped with correct non-adhesive or cloth woven tapes to assure a 100% factory appearance.