Swapping Motors... A few questions...

[Bygracealone]

Guys, I'm a bit confused (not surprising...). Here is what I have on the V20. There's a red cable connecting the engine harness to the control harness?



Then, at the control box, I had to jerry-rig it to connect to the red plug on the control box (I took it from my old 85 Evinrude and spliced it together so that I could use the plug with the plug on the control box. Did I simply make my own adapter by doing that? Also, does that mean this control box was for an older OMC? Here's what I did:



Here is the control box on the Hydra with the 91 Evinrude:



And this is what it looks like underneath (notice, there's no red plug):



It looks like the same control as this one on Ebay:



Any further advice? I'd like to keep the control that's currently on the Hydra, but it looks like I might have to swap them out too?

Skools, would you like to be my superhero? Feel like taking a short roadtrip to MD? :-)