Couldn't figure out why my blazer international submersible  left trailer light was not working or would flash in and out. Well everything was properly grounded and sealed with heat shrink. So i took cover off and light was full of water! What the heck so much for being submersible. What liggts do you all recommend? And can I buy just 1 light or do i have to buy a set? Thanks!

You should be able to buy just the one. I have seen them at different places. Sounds like one of your seals wasn't working I have started to use silicone on mine after I replace a light now

Welcome to the world of "MADE IN CHINA" and Chinese plastics, half the stuff that comes from there is not suited for what it's made for.   You may get another one like that one and it works, or you could try another brand and hope that one works.  If you get the cheapest ones you can find on ebay, then it's a crap shoot if they will work or not. 

I try to buy all my lights from a reputable company, they usually cost  two or three times  what the cheaper ebay ones sell for, but I've had better luck with them, but that's no guarantee they will last.

11 hours ago, Way2slow said:

Welcome to the world of "MADE IN CHINA" and Chinese plastics, half the stuff that comes from there is not suited for what it's made for.   You may get another one like that one and it works, or you could try another brand and hope that one works.  If you get the cheapest ones you can find on ebay, then it's a crap shoot if they will work or not. 

I try to buy all my lights from a reputable company, they usually cost  two or three times  what the cheaper ebay ones sell for, but I've had better luck with them, but that's no guarantee they will last.

Haha ya I get the Chinese thing. I thought maybe I avoided that paying 60$. Well I bought new ones. And bought the 5$ 2 year warranty. Just in case. They all work. So let's see what happens when i get to the lake. 

actually that is not the issue- you need to get a resistor in that circuit.  This is the kind of thing you need- https://www.ebay.com/itm/10x-50W-6-ohm-Load-Resistor-Fix-LED-Bulb-Fast-Hyper-Flash-Turn-Signal-Blink/281678992211?hash=item4195605353:g:sgQAAOSw0UdXtfUi

 

I am not sure exactly - but its the leds' not where they are made.  True- more expensive LEDS will have this built in- but that is what you need to fix the blinking. 

Ain't no resistor in the world going to make it water proof

Well I took everything out and bought all new LED all the way around. Everything works. Bought the warranty and I'm crossing fingers lol. Heat shrunk everything. Super tight connections.