You're going to have to
1. Buy the service manual
2. Buy the correct connectors for the light side and install the pins in them
3. Cut the pin connectors off of both sides and either butt splice or solder the wires together. Be sure to install shrink tubing over all connections.
The wiring section of your manual will tell you what color wire is for what light. If the colors don't match the light bar it should be easy enough to trace them.
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