You have an electrical fault
Turn signal indicators are lights. The flash to tell you, or indicate, that a turn signal is on, and which way the lights are flashing.
Sounds like you may have an incorrect bulb in one of the left turn-signal housings. If your "parking light" socket needs a two filament bulb (the kind with two contacts on the bottom) and a single filament bulb was put into that socket the result is the pair of socket-connectors (each meant for one of the contacts on the bottom of a dual-filament bulb) will be shorted together by the single-filament contact. This will effectively connect your turn-signal circuit for the left side to your parking light/panel light circuit all the time. The result is that if the parking lights are on, the single filament will be powered and back-feed the turn-signal circuit on the left side, but if the parking lights are off, then the left turn signal will power the single filament and back-feed the parking light circuit (which also feeds the radio and clock lights in your dashboard). Hope this helps
Replace the turn signal flasher relay.
Check the fuses
Bad ground.
a: you have a shorted filament in your turn signal light (arcing from turn filament to park light element, b: you have a bad ground at the headlight orturn signal associated with the issue c: you have the incorrect bulb installed in one of your turn signal lights d: most likely, you have a burned out bulb on one of the front side markers (these flash with the signals when headlights off using the ground plane of the parking light, as well they flash 180 degrees out of sync when parking/headlights on.
A strobe signal is the name for any signal that flashes on and off. For example the turn-lights on a car. Certain lights such as some leds aren't actually on all the time but flash faster than the eye can see, that is also a strobe signal.
If neither signal light works, the flasher may very likely be the problem. The hazard lights and the signal lights work off different flashers.
Flasher relay is defective.
was jeep in accident and repaired? sounds like crossed or shorted wires
Police officers may flash their lights to get your attention or signal for you to pull over, but they may not actually stop you if they are responding to an emergency call or trying to navigate through traffic.
Burned out bulb Faulty socket and/or wiring/ ground Faulty turn signal flasher Faulty turn signal Switch