There should be a 1/2"(ish) grommet below the battery and above the passenger footwell that enters the cabin just below the computer. I just removed such power wires from the 87 Montero I have for sale, 4-door should still be similar. I'm a fan of routing this type of wire inside to keep it from the elements. Then follow the harness to the rear seat area.


1987 Raider - Roxy
1988 Mighty Max 2.6L Turbo - Pearl
1997 Mountaineer V8 - Freddy
2000 Excursion V10 - Freya