New dash cluster lights won't light up.
Hey guys, so I've been restoring my late uncles old 1982 K5 Chevrolet blazer. I put all new fuses in the fuse box and the lights all worked so I chechked the gauge cluster and only one bulb was working. I ordered some blue led bulbs and replaced them all and when I turned the key only 3 or 4 bulbs lit up. I cant find any plugs I forgot to connect but there's a place that looks like a three prong connector would connect to. Also there's 3 of the copper connectors missing in the plus I had connected but it seems to me like if that was the problem all of the bulbs wouldn't light up instead on just some of them. Thanks in advance for any help guys!

