Engine sputtering at about 65

halifaxhops said

A headlight relay kit makes a world of difference in brightness, just realized you have points right? If so you need a 72 back harness, post a thread to see what will work I am not versed on them. Hey you ever check your dwell if you have points? You could have point float that is why it is sputtering at speed also. (weak spring pressure on the points)

Click to expand...

This is electronic I think, not points. I'm a bit confused now though because I know for sure that there's a ballast resistor on the firewall and those were only used with points distributors. If that's still connected, can that be throwing things off?

As for the lights, the headlights are good and bright, the tails and brakes are dimmer so could that be a back harness?