Harvey, the only veteran amongst the trio with 79 career starts, will pilot the #18 Honda for 14 rounds, including this weekend’s Grand Prix of St. Petersburg.
INVST also joins as a partner of the entry. “I’m thrilled to join Dale Coyne Racing for this season,” said Harvey, 30.
"I want to thank Dale, INVST and many other supporters for giving me this opportunity to return to the NTT IndyCar Series and continue this journey. St Pete has always been a city, and circuit, that I have loved and it’s great to have the opportunity to start this new chapter at one of my favourite events."
Sportscar ace Braun, who tested with the team last weekend at Sebring International Raceway, will be tasked with driving both the #18 and Rick Ware Racing-partnered #51 entries.
Braun, a 24 Hours of Le Mans and Daytona 24 Hours winner, will continue competing full-time in the IMSA SportsCar Championship this season, but will be in the #51 Honda this weekend alongside Harvey and be competing in the $1 Million Challenge at Thermal Club.
Other events remain unconfirmed.
“I’m so pumped about doing my first two NTT IndyCar Series races at St. Petersburg and Thermal Club with Dale Coyne Racing with RWR,” said Braun, 35.
"I want to give a huge thank you to Dale. What an opportunity he gave me last week to get a taste of the Indy car in Sebring. It was so fun to drive.
"The folks at Honda and HRC also made me feel right at home. I can’t wait to get going in St. Pete.
"It’s a place I haven’t been to in a little bit so we’re definitely jumping off into the deep end but I’m looking forward to getting going on the street course, continuing to work with the team, a great group of people there, and I couldn’t be more excited and ready to get going on this challenge. It’s going to be a blast."
Source: Autosport