It's not going to be a mess, we will help you all the way. Do you have the connector on the right side of firewall ? That one is pretty similar to the one you are missing. The wires you speak of on the left side of firewall are basically front lights (headlights, turn and park), horn and 12V power. 10 wires go into the connector from inside and 7 come out into engine bay.
Last edited by bartamos; 11/16/2022 2:32 AM.