Led blinker question

I have a 1981 cb750 and I bought one of those led light bars on the back of the bike. Saw a YouTube video where a guy replaced his turn signal relay with one of those cheap relays from Amazon. So i tried it and got nothing as far as the turn signals working... so i went out and bought a different kind of relay bc I heard on a forum where the load might not be enough to actually make the relay work. The new relay will let all my lights work, but the turn signals still won't flash/blink... any ideas? It's a two prong setup btw via /r/CafeRacers https://www.reddit.com/r/CafeRacers/comments/8qjkn7/led_blinker_question/?utm_source=ifttt