Regarding the Wings A Loft door locks module, do you have any of the documentation that might have come with that kit?
The reason I ask is that it looks like there may be a termination on that circuit breaker that's not there. I have a slightly different version of the Northwest door locks kit (actuators kit that replaces heavy original solenoids) and mine has a thin gauged wire terminating on the one side of that circuit breaker but it also has the original, thicker red wire on it too. Perhaps if someone else on the forum knows better how that kit is to be wired, they could confirm?
Here's a pic. The smaller wire in my case is bright yellow. You can see the brown power wire on the one side of the circuit breaker and the other red heavy wire on the same side of the circuit breaker as the yellow one.
Attachment 59463
Your otterstat looks quite nice, really. In good shape anyway. To do a simple test of whether that otterstat wiring will turn the fans on, you can jumper it right at those two connections. What you do is disconnect both of those wires right at the otterstat (those black female plastic connectors should just unclip from the otterstat) and then using a short length of wire with male spade connectors on both ends, plug that jumper wire into the two black, plastic connectors.
This is telling the car that the otterstat wants the fans to turn on. You don't need to turn the engine on, but with the ignition key turned to accessories and that jumper wire in place, you should have both cooling fans come on up front. You can visually check them (as well as hear them or feel the air blowing). If that works, then we go to the next step to having them work as intended.