Hello sir/miss ... I am the right person for this job, I'm an electrical engineer, have excellent background in power electronics and I have already designed PCBs. I can easily design electrical schematics for any system and drawing wiring diagrams for me is a piece of cake.
Moreover I have an experience with MATLAB so I can easily do it for you.
I'll achieve it as fast as you need and as fast as I can to achieve the same high standards as I’ve always pushed myself to.
Maybe I'm not the lowest bidder, but sure, and my work will prove to you, I'm the appropriate person for this task.
Hire me and make sure that task will be done perfectly and you will be completely satisfied.
I hope to discuss more details with you soon.