1994 toyota pickup. replaced head light switch and relay fuse to fix highbeams not coming on. still didnt fix that problem. now i have no dash, parking, or tail lights when i turn my headlights on. also theres no buzzing when u leave the headlights on when u take the keys out of the ignition

verify fuse and rheostat

k1500 ,. right?
dead both and both highbeams and FLASH mode ?
are the park lamps dead too? (lots of those)
NOT DRL< right? daylight running , option or in CANADA?????????
answer, USA< NOT DRL NOT CANADA.
93 is old school system, (very very simple, no puters to mess it up)

1. blown fuse.
2. bad head lamp switch.
3. bad head lamp relay. MY Online source shows no relay.

bad fuse, bad switch bad wiriing.

Try checking both a; your fuses, and b; check your bulbs. You should have two fuse boxes, one under hood and one in or under the dash. Check those for bad, blown or weak fuses. And check your headlights bulbs for them being good and their connection. If this doesn't fix your problem, you may check out your highbeam switch.

If both quit simulataneously. I would suspect the "switching" electrical connection switch; that activates the lights.

you need to check your main fuse for that its I thank a 60 to 80 amp fuse. Its on the left side finder in the next to the engine

no others just time for dimmer switch

The dash lights are controlled by the dimmer switch on the head lamp switch. Check under the dash to ensure nothing got accidentally unplugged. Also the plug in the back os the dash can come loose or a contact can burn up where it plugs in on high mileage cars and trucks. Some times you can clean the plug with a small brass brush and sometimes you have to replace the plug and or cluster depending how bad it is. Also most cars have more than one fuse box make sure to check them all.

Even though the relay is activated,I assumed you checked the out put?Also,You checked the voltage at the light sockets?With a meter,or test light ,check the fuse for the cluster lps,adjust them to dim,and to bright,the meter should act accordingly on the fuse.If it does not,replace the dimmer control,or head light switch,witch ever controls them.This may allow continuity to the tail lights as well.If the fuse is dead for the cluster lights,replacing the dimmer control,or head light switch will solve the problem,or,from another fuse ,supply voltage to the cluster lp fuse,one that is only hot with the key on,cause if you do this the dash lights will come on,every time you run the vehicle,day,or night.

this might help
1994 Toyota Pickup Car Security Wiring Diagram
Battery Constant 12v+ Positive Wire (+): White And White/Red
Battery Constant 12v+ Positive Wire Location: Ignition Switch Harness
Starter Positive Wire (+): Black
Starter Positive Wire Location: Ignition Switch Harness
Ignition Positive Wire (+): Black/Yellow
Ignition Positive Wire Location: Ignition Switch Harness
Second Ignition Positive Wire (+): Black/Yellow Or Black/Red
Second Ignition Positive Wire Location: Ignition Switch Harness
Accessory Positive Wire (+): Blue/Red
Accessory Positive Wire Location: Ignition Switch Harness
Parking Light Negative Wire (-): Red/Black
Parking Light Negative Wire Location: At Steering Column Harness
Parking Light Positive Wire (+): Green
Parking Light Positive Wire Location: In Drivers Kick Panel
Power Door Lock Negative Wire (-): Blue/White
Power Door Lock Negative Wire Location: At Door Control Relay. The door control relay, is located behind the driver dash speaker.
Power Door Unlock Negative Wire (-): Blue/Yellow
Power Door Unlock Negative Wire Location: At Door Control Relay. The door control relay, is located behind the driver dash speaker.
Door Trigger Negative Wire (-): Black/White Or Black
Door Trigger Negative Wire Location: At 2-Pin Plug, Top Of Fusebox
Domelight Supervision Wire: Use Door Trigger, Requires Relay
Domelight Supervision Wire Location: N/A
Horn Negative Wire (-): Green/Red
Horn Negative Wire Location: At Steering Column Harness
Tachometer Wire Negative Wire (-): Black
Tachometer Wire Negative Wire Location: At Diagnostic Connector. The diagnostic connector, is located on the passenger inner fender near the fuse/relay box.
Brake Light Positive Wire (+): Green/White
Brake Light Positive Wire Location: At Switch Above Brake Pedal
Factory Alarm Disarm Wire (-): N/A
Factory Alarm Disarm Wire Location: N/A
Factory Anti-Theft System: N/A
Factory Anti-Theft System Location: N/A

Have you checked your relays? If a relay is shorting it will cause the fuses to blow.