Tail lights not lighting

[RPGs818SNA]

The parking lights are controlled 2 ways: Turn on the ignition, and turn on the parking lights with the headlights stalk switch, or just turn on the Parking Light Switch (Hazard switch). Either should light the rear tail lights. (Both ways require the Hazard switch to be plugged into the harness.) If not, be sure all the connectors under the steering wheel are plugged in. If still no power to the tail lights, here’s the path the power and tail light relay control circuit takes.

The power for the tail lights goes through 2 fuses, 1 switch, 1 relay, and 8 connectors:
Main fuse box Fuse No7 20 A, connector F68 Pin 4
Fuse and relay box Tail illumination relay, control circuit must be active, conn F40 pin 9, B152 p12, B158 p5
Parking Switch (Hazard switch), B69, pins 1, 2, 4
Fuse and relay box Fuse No 5 10 A, B152 p11, 10
B99 p17, R3 p 17, R28

The control circuit for the tail relay goes through 2 fuses, 1 switch, 1 relay, and 7connectors:
SBF-1, 120A
SBF-4 50A, F38
F46 p2, B108 p2, Ignition switch ON or START, not ACC, B72 p1,4
B158 Pin 8, Tail relay coil, B152 p2
Light switch PARKING or HEADLIGHTS, b71 P14,16, to ground.

Here are the relevant schematics with red for normal tail light power, green for the relay control, and orange for hazard switch power.
Parking lights schematic.jpg

Good luck, and hope it's an easy one to find.
RPG