Snack Attack Vending LLC is offering a Mars MEI AP LCM 1, 2, 3 & 4 Series Harness for VN2512 or VN2502 bill validators 24v. The harness is Non - MDB. This harness has a (10) pin black power connection & (18) pin black pulse credit connection at one end (Both connections install on the side of VN validator). The opposite end has a (14) pin white connection to the control board. If you are upgrading your bill validator to a Mars MEI validator. Then, this harness is a must have. This is a brand new harness from factory.