Device on Sub Mega Tether Camera VCC+ 5v+ Video ---------------------> white-brn Gnd Gnd ---------> brown Mega RS485 Serial Booster Ser1 rx 18 yellow RO System 5v+ 5V+ DE A -----> tan 5v+ RE B -----> white-tan Ser1 tx 19 orange DI Not connected PPM signal from RC A8 <--------- white-blue Gnd <--------- blue green - unused white-green - no good CMPS12 Compass VCC+ 5v+ SDA yellow SDA 20 SCL orange SCL 21 unused unused Gnd Gnd BTS7960B Motor Drivers (5) +power System 12v+ -power System Gnd VCC+ 5v+ Gnd Gnd Fwd Enable (tied to VCC) Rev Enable (tied to VCC) Fwd PWM 12, 8, 4, 2, 6 Rev PWM 13, 9, 5, 3, 7 Lights Relay +power System 12v+ -power System Gnd VCC+ 5v+ Gnd Gnd Signal 34 Power Module (generic) Battery 12v+ --> System 12v+ Battery Gnd --> System Gnd BEC 5v+ --> System 5v+ Volts Sense A10 Amps Sense A11 MS5540-CM Pressure Sensor VCC pink 10 Gnd green Gnd MCLK tan 5v+ DIN lt blue 51 (MOSI) DOUT brown 50 (MISO) SCLK blue 52 (SCK)