You are going to have to change the Flasher Relay or possibly add resistors to the circuit to equalize the load. You have changed the electrical requirement to the Flasher with the LED lights which is causing the relay to heat up more quickly and open & close more rapidly. LEDs consume so little power compared to the stock bulbs, that the flasher relay thinks that a bulb is burned out when LEDs are used in place of stock bulbs, thus the fast flash.
the circuit boards on the taillights are bad.
The engine control by way of the ignition module.
A blown fuse.
in dash lights
No. Daytime running light can be disabled without affecting turn signals.
The bulbs should be checked on a 1993 Dodge Dakota if the taillights are not working. The plugs on the trailer package should also be checked to make sure that they are working.
More than likely a defective Flasher Relay. Replace it.
A DVI port
Yhese are fed from different sorces so I would check the groiunds on the lights.
Turn signal flasher