69 273 headlights wont turn on

sorry yall, for the lack of updates, i got the carb rebuilt and the manifolds put back in the shape resealed and paited. the ecarter emissions chip is gone and the moter hasnt ran this smooth in a long time. ok so here is the problems, i took it to the electrician and he said the car doesnt have an electrical problem, but the headlight switch is bad. so i went out and bought a new headlight switch and dimmer switch and boom the headlights work again. the alternator doesn't charge when idle. battery reads 13.15 13.14 when i rev it and walk back to the battery it reads up to 13.50 13.51. The car electrician said the alternator is only working at 60 percent..... smh i dont know, he said when i drive it it will charge but not on idle. Now for the biggest issue, when the car is off lights remain on, rear is red and blinkers are solid yellow. Im so confused