Well, finally the loom is all wrapped and back in and i have fitted a new (extra) fuse box. I had one of these on originally but it was a bit loose on the fittings, so a quick google and a new one fitted. I have it mounted to the base of the original fuse box and have taken a live feed that is switch and a live non-switched feed so it give me 2 extra fuse takeoffs for each supply. So i have one for the ECU and a couple to run the electric fans, as i will be running 2 for the rad and one under the bonnet to get rid of the heat under the bonnet in warm weather as this does help the car to stay cooler when its how and in traffic. I have used the fog light switch as the manual fan override so if i do need to cut them in for any reason its just a quick flick of the switch. I hope that with the big rad and injection that it will be better than the carbs as they did run rough when hot. I will post a pic of the engine bay fan setup when i have time. Im using a PC server cooling fan as they are super quiet when running and very robust.
Opel Manta A Series extra fuse box