"Alex has done a couple very successful tests with the team, and we've been waiting patiently for his managers to complete a sponsorship deal that puts him in the car for the season," team owner John Brooks said. "Everyone's been working hard to put this together and we're thrilled to return to the series at Long Beach. I've run here for 31 years."
Jones, 22, is veteran of British Formula Ford competition and has tested British F3, ItalianF3 and Firestone Indy Lights cars over the past two seasons.
"'I am really looking forward to the opportunity I have got with John (Brooks and his team," Jones said. "We have gelled really well in testing, and I feel we can put on a good show at Long Beach.
"For me it will be my Indy Lights debut and with the minimal testing we have had I am just going to focus on keeping my head down and working hard with the team to improve each time out on track and build for the future."