Turn signals, flasher and rear windshield wipers all quit at the same time. Checked each individual fuse and they were ok.

Check the rear wiper fuse in the instrument panel fuse box. The rear wiper switch sends a signal to the body control module for rear wiper operation. The BCM sends a satart signal to the rear wiper motor circuit board

In the under hood fuse box , should have diagram inside the lid . Front wiper's or rear ? Front fuse # 36 - 25 amp. Plus Two relay's PCB hi and Wiper PCB relay . Wouldn't think this being fuse problem . Wiper switch , motor etc... The wiper's are control by a computer . BCM - body control module .

The windshield wiper/washer system consists of front and rear wipers. The front and rear wipers are operative when the vehicle is in accessory or run. The front wipers have 4 different modes: Mist, Intermittent, Low, and High. When the front wipers are in the intermittent mode, there are 5 delay modes to chose from, commanded by the windshield wiper washer switch through the body control module (BCM). The rear wipers has an only one mode.

If the fuse is bad , could have a short to ground or wiper motor pulling to much current (amps) . Fuse's don't just blow for no reason ! Could also have DTC'S - diagnostic trouble codes stored in the BCM .
DTC B3715
DTC B3873
DTC B3875
DTC B3922

DTC B3715 02: Front Wiper Relay Drive Circuit Short to Ground
The body control module (BCM) controls the wiper motor based on input from the windshield wiper washer switch. The BCM monitors the wiper washer switch through three separate signal circuits and a ground circuit. The windshield wiper switch high signal circuit is used to determine high speed wiper operation, the windshield wiper switch low signal is used to determine low speed, intermittent, and mist operation through the use of a resistor ladder, and windshield washer switch signal circuit is used to determine washer operation.
The BCM controls the windshield wiper motor through two output controls, controlling two different PCB relays which control the desired wiper speed, high or low.
DTC B3922 00: Front Wiper Function Select Circuit

The PCB relay's are non- servicable , replace fuse box . Soldered in Your best bet mit be to take it to a qualified repair shop .

Check all fuses with test light or multimeter. I tend to agree with you that it is probably a fuse. Not knowing of any "hidden" fuses or in-line fuses on that system. But sometimes other fuses that are not labeled as wiper or turn signal might be used for power also. So, check all fuses including the ones under the hood.

the wipers and turn signals are probably a faulty switch (a common problem 0 I have a 1994 c180 and have had 2 switches on they vary from the flashers not working or wipers coming on by them selves or not working at all indicators not working can but from ebay for about 30 pounds hope this helps ivan

Here are some more common problems.

• Motor:

The wiper motor is commonly replaced and was often not the problem. Don't replace the motor yet. maybe it's not the motor. It could be a fuse or something at the wiper switch. The wiper motor has two windings, fast and slow. The wiper switch sends a ground signal to each motor winding. More often, there are problems with the relay, or at the wiper switch, or in the cable to the motor.

• Windshield Washer:

Don't be too quick to replace the washer pump. The problem is often just a clog in the sprayer heads. You can clean out the sprayer holes with a needle, some have two holes, so look closely. Hope this helps.

https://s9.postimg.org/4k77afpa7/turn_signal.jpg

Click on the link. I looked at turn signal wiring. Check fuse 15--20 amp under hood fuse box. Not only check the fuse, use a testlight and check fuse circuit for voltage, hot all the time. At the combo flasher, there is also, ignition/run voltage, goes hot with the key on, you can see wire color.
There could be other issues. As you can see, turn signal switch is part of ground circuit.
I could post whole diagram on one link, but, too small to read. Usually with multiple issues, I just pick one and check it out. Fixing one issue may or may not fix the others?

replace the COMBINATION SWITCH

Sounds like the flasher unit to me. Normally the emergency flasher and turn signal are separate.

check and replace the flasher unit if necessary, sometimes located in the fuse box area, sometimes under the dash near the steering column

Sounds like the combination switch is bad. The comination switch is for the turn signals and high beams and sometimes cruise control and windshield wipers. The combination switch is the turn signal lever. Also might want to check turn signal flasher operation.