power up {electrical}

In addition to the above

DASH. Understand how they work. The inst. lamp fuse IS THE ONLY fuse that is fed from "another" fuse and is downstream from a switch

The tail / park light circuit fuse supplies power to the headlight dash dimmer, so that circuit must work

Power goes through the dimmer control which must be rotated to the left

A light brown / tan wire carries dash power from the dimmer down to the inst. fuse, through the fuse, and THEN out to all dash lights on ORANGE wires. Options determine what all, IE console or column shift indicator, etc etc.

Tail, stop, turn.

The same two wires for brake lights power the left / right turn filaments, so if you have brake lights AND IF it's properly wired, in theory the turn should work. Check the wiring to / from the TS switch, make certain the 4X switch is not damaged or bumped partially "on." And as above, check the kick panel connector.

The brake light switch feeds INTO the TS switch, which selects which side to power, and then feeds back to the lamps.

Tail circuit is one wire coming from the light switch, same feed as the parking lamps---EXCEPT than (I think) in 69 the park / tail were separate off the light switch. That is, the park lights (I think) do not 'stay on' with headlights until ? 70 ?.

All Ma did to change that was to move one wire--the park light feed wire--- from the park contact on the switch to the tail contact.