Problems with my directionals not working 78 CJ

So I rewired everything except the fuse panel and I installed LED lights in the back regular lights in front Factory and my directionals just don't want to stay working they blink very weekly and then they stopped I have to jiggle the Flasher and then they start again and then they stopped any suggestions

Also when I put the direction was on it seems to make my electrical system go Haywire for a second

Thanks P Scott

 

You might try a new or even a heavy duty type flasher. The led lights do not use as much volts as a conventional 12v system and might require a resistor to cut the voltage down to the led lights. Also the ground connection to the rear tail lights pretty poor. You could try to add a jumper wire from the tailight housing to the battery negative and see how that works as all that steel has poor conductivity. I had issues with my turn signals and it was solved by blowing out where the turn signal handle goes into the steering column. It is a '78 CJ after all and could have worn contacts.