It was a superb comeback by the visitors to win the second and third matches after losing heavily in the opener at the M Chinnaswamy Stadium.
For the second match in a row, India batsman failed to chase the target. In the second game, it was 280 that they faltered in pursuit of and today, a big score of 313 could not be overhauled. Chasing 313, India A finished with 267/8 in 50 overs.
West Indies A will be confident with this 2-1 series success when they go into the one off Twenty20 at the same venue on Saturday.
Opener Baba Aparajith was the top scorer for the hosts with 78 (96 balls, 6x4, 1x6) and Yuvraj Singh made 61 (59 balls, 4x4 3x6). Barring these two, the rest could not make big contributions.
Left-arm spinner Veerasammy Permaul was the most successful bowler with 3/55 in 10 overs. Opening paceman Miguel Cummins took 2/46.
Mandeep Singh could not bat for India A due to an injury sustained during fielding today.
Earlier, left-arm paceman Jaydev Unadkat took five wickets including two off successive deliveries but West Indies A posted an impressive score of 312/9 in 50 overs after Edwards' fine century.
West Indies A batsmen scored at a brisk pace in the final stages of the innings. The visitors scored 100 runs in the last 10 overs but lost six wickets.
It was right-hander Edwards' day in Bangalore. His run-a-ball 104 with the help of 12 fours and three sixes had give them a great chance to win the series. They have comeback strongly after losing the opening one-day.
Left-hander Leon Johnson struck a half century (54, 42 balls, 4x4, 3x6) while last match centurion Jonathan Carter made 35. Opener Kieran Powell contributed 40 runs.
Unadkat took his maiden five-wicket haul in List A cricket. He finished with 5/55 in 10 overs. He took two wickets in two balls in his final over but was denied a hat-trick. Left-arm spinner Shahbaz Nadeem took two wickets.
West Indies A 312/9 in 50 overs (Kirk Edwards 104, Leon Johnson 54, Kieran Powell 40, Jonathan Carter 35, Jaydev Unadkat 5/55, Shahbaz Nadeem 2/33) Vs India A 267/8 in 50 overs (Baba Aparajith 78, Yuvraj Singh 61, Robin Uthappa 27, Veerasammy Permaul 3/55, Miguel Cummins 2/46)
Game 1: India A won by 77 runs
Game 2: West Indies A won by 55 runs
Game 3: West Indies A won by 45 runs