Are you saying that your relay worked, except for the dash light?
Mine is intermittent. But the light is true to the operation. If the light is not on, the plugs are not on. Today when I left for work, the plugs would not light, but some cranking got it going. (-10C) When I got to work I shut it off and I tried the plugs a few time by turning the key. It worked. When I left at noon to go to another building, they didn't work again.

When I got to the other building, I tested them again and they worked. When I left, they didn't again!