You are right saqib bhai, actually the priority is to only first lay down the wiring harness and put out the old junk wiring so that to start with, we have a good ground. Then, we will install the heater and cooler boxes as those are plug and play with the wiring, and the panel which shows control for them. Nothing complicated. Rest comes later. Primarily my objective is to clean the wiring issues on the basic looms as when I opened up the wiring, there were literally no grips and some of the grips were unknown to me (not of this car) which were attached in very bad way, on a whole wiring was messed up inside out.