Thank you very much everyone, all of the input has been gratefully received. I have asked for the load my end point draws which I will share once I have this.
Yes, this would work - basically what I am after is; is there anything already in a manufactured state so i can purchase. If not, then I will have to develop. With this development, I will be able to send off the schematic to a developer who will design the final product for me to put into production. if the thing works, then it will change how my devices work in a 12v environment. I must apologise for my reticence to give away all of the information, but my product is currently going through a long winded patent application and until it receives its final global patent, I am reluctant to give any further information away, hence the pulling of teeth.