RH Blinker won’t blink with headlights on

[andrewpclayton]

1969 c10 I’ve seen some variations of this question on here but never the same with a solution..
blinkers all work fine with lights off, with lights in the driver side works but passenger doesn’t. Back all work fine with way.

I have applied a ground wire from each sides housing to the frame, and made better grounds from firewall to engine as what I had was pretty chewed up. The lights got brighter for sure but the problem remained

Is there another ground I should check/replace?

Is there a ground from engine to chassis? As I’m thinking about it now I don’t think I did that when I put an engine in this summer

I swapped to auto trans so I have an auto column out of another 69 (I think) but the wiring was different I had to get a straight to moon adapter

What would you check next?