64 instrument cluster swap into a 65 barracuda harness question

I really just don't know. Some panels have a single turn indicator like ( <-> ) where others have 2 separate indicators. I'm not sure how they wired the 1 bulb to flash with both left and right. I can't look at the boards alone and determine what bulb is for what, even if I could clearly see the copper traces on that 64 board. I would atleast need to see the fronts/bezels.
Only one I know inside and out is the 2nd gen' rallye panel. I have a complete 65 panel on hand but not a 64 :(
Bottom line, I couldn't finger it all out from here.