Electrical woes

[Eyegore]

OK guys I need your help on my 78 c20.
First problem, dash lights don't work, everything else does in the dash does, gauges -oil, temp., gas, wipers, headlights. But at night no dash lights when headlights are on. All fuses are good.

Second problem. I just redid the horn cap with pin, cup, etc. all inside the steering wheel. Now when I hit the turn signal to go right the horn honks on and off as the signal goes on and off, it does not do this on left directional. However when I pull the emergency flashers on, there is no flashing just a clicking down under the dash in the signal relay box, this is with the key in on and off position. Again all of this started after I changed the missing horn mechanism. Where did I screw up?

P.S. lights were not working long before the horn issue.

Thanks

Tom