Look at the electrical plugs around the fuse box and where the wiring transitions through the fire wall into the back of the dash. Was the engine bay wiring adapted during the swap or just unplugged ? Is the position of the dimmer the same as before? What happens when you pull the low beam fuse? This is generic advice, Zero experience with a Mitsubishi. Another thing would be to visually search the harness for damage. Good luck. Please post a follow up, TIA.
'16 Camry LE STP synth 0w20 and STP filter. the Fridge
1994 Ranger ,the Rat, 5w30 dino, STP filter
'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better