I had the same on/off….on/off issue when I first installed mine. No second chances at that price. I put them back in the box and shipped them back to the reseller for a refund.Update* inop today. However now there is a pattern on the right tail light. All other light functions still operate as normal. Upon start up with the lights on. The r tail will flash in pattern 3 times. On..off……..on..off……..on..off. Then will remain off. I am not sure if there is some type of internal failure and either need to switch brands or get another set. I have not found anything on the interwebs stating a non led to led needs a programmer if resistors are used.
You shouldn’t have to jump through hoops, dance on one foot and rub one out to get these to work! F’ing ridiculous! Just my opinion.