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In the underdash fuse/relay box, the 15A TAIL fuse feeds power to the coil of headlight relay 2. When the combination switch is set to TAIL, the relay closes and the outer tail lamps light. In the same underdash fuse/relay box, the 20A STOP fuse feeds power to the brake light switch. When the brake pedal is pressed, the inner brake lamps light. The underdash fuse/relay box also contains the 10A TURN BACK fuse which feeds power to the hazard switch and the turn signal relay. Relay output is fed to the combination switch and turn signal power is applied to the selected middle tail light. The fourth fuse in the underdash fuse/relay box is the 15A HAZARD fuse which feeds power to the hazard switch and turn signal relay. When the hazard switch is set, the turn lamps on both sides begin flashing.
The first thing is to check for power at the brake light switch,there should be power to one wire the other wire power up when pedal is pushed, this will tell you if it a power loss if theres no power to switch, if theres power to switch and through switch with pedal pushed then loog at the connect for signal switch its near column big connector as brake light power goes through switch you may have fryed that wire have some watch lights as you wiggle but this is only if you have power at brake switch. if theres no power then double check fuses even in the engine compartment, mostlikly it a fuse the wiring should not of burnt with a fuse in line, theres fuses in engine fuse box that also control lights.