If he is going to provide the leads and do some of the electrical work then wouldn't he be entitled to some of the profit ?
You are laying claim to the profits because (I assume) you will be performing the actual work along with your partner. If so, he should be entitled to some of the profit.
My suggestion (if you insist on having a partnership) is that you both do your respective jobs (him sales, you installation) and at years end see how the company is performing. You may be surprised at year's end. At this point if you want to take a draw from the company it should be equal.
When I went out on my own I had a previous coworker just chomping at the bit to become partners with me. I decided I valued our friendship more. It's been 3 years and I am VERY glad I stayed single.
Just my two cents......
