Thanks for the response, 
Please guide as to where the negative bus is running and I intent to be usig a 18-0-18 transformer for the 12V7.6Ah SLA battery, in the above circuit the negative bus is not very clear to me.<br> I shall be building this in the coming week starting from scratch and since this is a busy week of festivities may be delayed, however I appreciate your efforts and promise to update you on the status of the circuit.