70 cluster swap to 67 harness?

[soulpedal]

Hi I'm new here and have a question.. What am I missing here?? Can you swap a 70 cluster into a 67 c10 with basic cluster? I'm not getting cluster lights, no dimming, right side signal stays lit when key turned. Headlights work, gas gauge does not work. My cluster light and gas gauge worked before on the old cluster. Do I need to swap a later headlight switch?? I cleaned the contacts on the harness end and cluster, checked bulbs. Unsure about fuse at panel, didnt look broken.