How do you tighten up rear turn signal on 2000 duce

Yes my thoughts 2,,,,

Remove the seat. Unplug the connector for the taillight and rear turn signals. Stabiliize the bike and remove the upper shock bolts. The job is also easier if you remove the rear tire. Remove the bolts from the fender struts on both sides. Be sure to hold the fender or clamp it place when removing the bolts so the fender doesn't slip out of place and get scratched. Unplug the turn signals from the taillight housing. Pull the wires and connectors through the holes in the struts. Lift the fender out.

It seems to me that the nut that holds the turn signal on is on the backside of the fender strut between it and the fender. You'll have to take the fender strut off to tighten the nut.

The struts model (MacPherson Strut),are both in front and back of this car.
2000 - 2006 Hyundai Elantra Shock Absorber and Strut Assembly - Rear, Driver Side, KYB GR-2/EXCEL-G, Twin tube, Strut Assembly. $72
2000 - 2006 Hyundai Elantra Shock Absorber and Strut Assembly - Rear, Passenger Side, KYB GR-2/EXCEL-G, Twin tube, Strut Assembly $68
1996 - 2006 Hyundai Elantra Shock Absorber and Strut Assembly - Front, Driver Side, KYB GR-2/EXCEL-G, Twin tube, Strut Assembly $67
1996 - 2006 Hyundai Elantra Shock Absorber and Strut Assembly - Front, Passenger Side, KYB GR-2/EXCEL-G, Twin tube, Strut Assembly $63
Of course this is only the cartridge, you have to transfer the spring, and the top mount of the existing strut. You need a pair of coil spring compressor to do the job. The basic procedure to replace a strut is:
Remove the top nuts that secure the strut assembly to the frame mount inside the engine compartment. Do not remove the center nut.
Mark the lower strut mounting location on the hub for installation reference. The alignment will be close if the new strut is installed in the same position.
Remove the bolts that hold the strut assembly to the hub.
Remove the strut assembly from the vehicle.
Mark the top mount for installation reference. Using a side mounted spring compressor, compress the spring and remove the top nut and retaining washer. Pull strut assembly out from the bottom of spring.
Slide the new strut assembly up into the spring and reposition the top mount onto the spring in the same position that it was removed. Install the retaining washer and top nut.
Tighten the top nut to the manufacturer's specifications and carefully remove the spring compressor.
Place the strut assembly back into the vehicle.

You have to take the rear fender struts off to get to the nut to tighten them.

good Luck
Steve

REMOVE**** FRONT SHOCKS, FIRST OF ALL.SUPPORT THE LOWER CONTROL ARM WITH A JACK,REMOVE FRONT WHEEL, REMOVE BRAKE HOSE AND ABS SENSOR HARNESS TO THE STRUT BOLTS OR CLIPS,REMOVE ACTUATOR FROM TOP OF THE STRUT,IF EQUIPPED WITH AUTOMATIC ADJUSTING SUSPENSION. PAINT ALIGNMENT MARKS ON THE UPPER STRUT MOUNTING BLOCK AND STRUT TOWER AND ON THE LOWER STRUT MOUNT TO STEERING KNUCKLE SO THAT CAN BE REINSTALLED IN THE SAME POSITION. REMOVE UPPER STRUT MOUNTING NUTS, REMOVE THE STRUT TO KNUCKLE BOLTS,REMOVE STRUT ASSEMBLY.TO INSTALL ***** INSTALL STRUT INTO THE STRUT TOWER ALIGNING THE PAINT MARKS MADE DURING REMOVAL.INSTALL UPPER MOUNTING NUTS AND TIGHTEN TO 34 - 46 FT LBS. INSTALL STRUT TO KNUCKLE BOLTS TIGHTEN TO 55 - 61 FT LBS. INSTALL ACTUATOR AND ENGAGE THE ELECTRICAL CONNECTOR IF EQUIPPED WITH AAS. INSTALL BRAKE HOSE AND ABS SENSOR HARNESS CLIPS OR BOLTS.INSTALL WHEEL AND CHECK ADJUST THE FRONT END ALIGNMENT. TO ( REPLACE REAR SHOCKS ) REMOVE REAR WHEELS, REMOVE REAR PACKAGE TRIM. REMOVE SPEED SENSOR HARNESS, REMOVE TOP STRUT NUTS,THE SUSPENSION WILL DROP WHEN THE WEIGHT LIFTS OFF THE WHEELS. REMOVE BOTTOM STRUT BOLTS.REMOVE STRUT ASSEMBLY.TO INSTALL ***** INSTALL STRUT ASSEMBLY, INSTALL BOTTOM STRUT MOUNT BOLTS AND TIGHTEN TO 55 - 61 FT LBS.INSTALL UPPER MOUNTING NUTS AND TIGHTEN TO 33 - 46 FT LBS. INSTALL SPEED SENSOR HARNESS.INSTALL REAR PACKAGE TRIM. INSTALL REAR WHEELS.

I have not removed the turn signals from a model this late. There may be a nut between the fender and the fender strut. You may have to remove the fender to get the turn signals off.

1. Install or connect the following:
   
   • Spring seat. Tighten the new upper strut retaining nut to 36 ft. lbs. (49 Nm).
     
2. Remove the strut from the vise and disassemble the securing nuts and bolt.
   
3. Rotate the upper support so the lowest bolt on the support aligns with the projection part of the lower spring.
   

1. Install or connect the following:
2. Strut and tighten the strut to body bolts to 59 ft. lbs. (80 Nm).
   

• Strut to the steering knuckle and tighten the bolts to 156 ft. lbs. (211 Nm).
  

To install:

1. Install the lower ball joint onto the steering knuckle and tighten nut to 90 ft. lbs. (123 Nm). Install new cotter pin.
   

check the wiring under the rear tire. you probably tore the wires. if that's fine. do your flasher work? if they do then double check the bulbs. if they're fine them it could be the tsm ( turn signal module ) Only consider replacing that if the wiring is fine and the turn signals worked fine before

I’m happy to assist further over the phone at https://www.6ya.com/expert/robert_5bac37c3cb991fdb