When I got my 67, the dash turn signals didn't blink, and would only click a few times. The outer lights on the sequential lights didn't work on both sides. Bulbs were ok and i noticed the sequential box, which is an aftermarket box had a plastic cap that can be removed. I removed the cap, cleaned the contacts and now lights work. All lights, front, back, brake, reverse, emergency work but I get no dash blink and just a few click then it stops. The dash light stays on and dims a little but no blink. Read a few articles, and I've checked all that they say is wrong but can't resolve this. Any help would be appreciated.