Its not with directv that you would be installing, it is a sub contractor or an RSP that you would be working for. Directv does not have its own installation department like Dish Network does or Comcast or Charter or Time Warner or Brighthouse. Each sub contractor and RSP pays diferently, for instance there is a dbs contractor in the north georgia area that is only paying $5.15 an hour and thats total crap wages for the work involved. Generaly you can expect a pay by the job situation and the norm seems to be $75/$25 mostly now.
If your looking for hourly wages and benefits then your best bet is to get on with Dish or Comcast who tend to pay the best hourly wages and have the best benefits though I dont recommend working directly for Dish in the Detroit market as the general manager for the area and the office manager for Wixom/Ann Arbor leave alot to be desired. Expect to make $13 an hour starting at Dish now and about $12 an hour with Comcast, Comcast has pre employment testing that includes math skills that you wont ever use on the job so be sure to brush up on all of your junior high and high school math such as fractions and decimals and advanced algebra. Dish only does a background check and a MVR check and is pretty easy to get into, just be sure to not get involved with any of the politics.