Or find a newer style light.
The 3 wire setups were for the older third gens and had a relay system IIRC.
The newer third gens and early 4th gens (never owned a LS1 4th gen so i wouldnt know for sure) use a 2 wire setup and a Headlight control module mounted on the firewall.
Hopefully wiring the 3 wire motor that way doesnt burn out the headlight control module. ;x
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