Aircraft Overview - Devices

The following devices represent your aircraft, and will be used to generate your personalized electrical diagram, VP-X pinout and electrical build buying guide.

Instruments/Avionics

GTX 45R
pin name	actual current draw	circuit breaker value	min wire size	VP-X pin	backup?	current fault detect?	switch	bank preference
Transponder/ADSB	1.3A	3.0A	20g	J8-8	none	Yes	Avionics Master	Bank A or B
GMA 245
Audio Panel	0.3A	5.0A	20g	J8-3	none	No	Avionics Master	Bank A or B
G5 w/Battery
G5 (BU EFIS)	0.8A	5.0A	20g	J10-2	none	Yes	Avionics Master	Bank B
notes: Backup EFIS & ADAHRS
GMU 11
Magnetometer	0.5A	1.0A	20g	J10-7	none	No	always on	Bank A or B
GTN 650
GTN 650 Nav	2.2A	10.0A	18g	J12-1	none	Yes	Avionics Master	Bank A
GTN 650 Comm	0.5A	8.0A	18g	J12-3	none	Yes	Avionics Master	Bank A
Autopilot
AFCS	4.1A	5.0A	20g	J8-1	none	No	Avionics Master	Bank A or B
notes: AFCS Mode Controller GMC 507, Pitch & Roll Servos
GEA 24
EIS	0.4A	5.0A	20g	J8-4	Method C	Yes	always on	Bank A or B
notes: Engine Indication System (EIS)
Accessory Block
AccBlock12	3.0A	5.0A	18g	J12-8	none	No	always on	Bank A or B
notes: Cowl Flaps, Ram Air, Oil Damper, Stall Warning, Switch Lights, Overhead Lights, Lemo, CO2 Monitor
GAD 29
ARINC 429	0.2A	2.0A	20g	J12-10	none	Yes	Avionics Master	Bank A or B
notes: ARINC 429 Interface
GSU 25
ADAHRS	0.2A	2.0A	20g	J1-1	Method C	Yes	always on	Bank A
notes: Primary ADAHRS
GTR 20
Comm#2	0.6A	8.0A	18g	J10-3	none	Yes	Avionics Master	Bank B
notes: Comm #2 - 7.5 Max, .6 receiving... 3.0 transmitting
G3X GDU 460
G3X (PFD)	2.0A	5.0A	20g	J8-5	Method C	No	Avionics Master	Bank A
G3X GDU 460
G3X (MFD)	2.0A	5.0A	20g	J12-9	Method C	No	always on	Bank A
GAP 26 (-20)
Pitot/AOA	0.5A	15.0A	14g	J12-2	none	Yes	Pitot Heat	Bank A or B
notes: Heated Pitot/AOA (4 - 12 amps)

Lights

Strobes
pin name	actual current draw	circuit breaker value	min wire size	VP-X pin	backup?	current fault detect?	switch	bank preference
Strobes	6.0A	10.0A	18g	J10-6	none	No	Strobe Lt	Bank A or B
notes: AeroLEDs Pulsar NS/Suntail
Nav Lights (LED)
Nav Lights	1.5A	2.0A	20g	J10-8	none	Yes	Nav Lt	Bank A or B
notes: AeroLEDs Pulsar NS/Suntail
Landing Lt Left
Landing Lt Left	4.3A	10.0A	18g	J8-2	none	Yes	Land Lt	Bank A
notes: AeroLEDs Aerosun VX
Taxi Light (LED)
Taxi Lights	3.4A	5.0A	18g	J8-6	none	Yes	Taxi Lt	Bank B
notes: AeroLEDs Aerosun VX
Landing Lt Right
Landing Lt Right	4.3A	10.0A	18g	J12-7	none	Yes	Land Lt	Bank A
notes: AeroLEDs Aerosun VX

Accessories/Ignition/Other

Boost Pump (inj)
pin name	actual current draw	circuit breaker value	min wire size	VP-X pin	backup?	current fault detect?	switch	bank preference
BoostPump	4.5A	10.0A	14g	J10-5	none	No	Boost Pump	Bank A or B
notes: Airflow Performance Pump
Garmin GSA 28
AP Yaw Servo	2.8A	3.0A	20g	J8-7	none	No	Avionics Master	Bank A or B
TCW 6ah IBBS
Backup Battery	4.0A	10.0A	18g	J12-12	none	No	always on	Bank A or B
notes: Pass-through power to two Dual USB chargers.

Electrical System

B&C Pri Alt
pin name	actual current draw	circuit breaker value	min wire size	VP-X pin	backup?	current fault detect?	switch	bank preference
Alternator Field	2.5A	5.0A	20g	J12-11	none	No	Alternator	Bank A
Alternator Vsense	0.1A	2.0A	20g	J1-2	none	No	always on	Bank A
SD-20 BU Alt
Alt - BU - Field	2.5A	5.0A	20g	J10-4	none	No	BU Alternator	Bank B
Alt - BU - Vsense	0.1A	2.0A	20g	J10-10	none	No	always off	Bank B

VP-X Pinout and Configuration

• Pin: the actual pin number on the connector.
• Bank: The VP-X Pro has two independent systems in one box. Each system is referred to as a "bank" of circuits. This column shows which bank that specific power pin is on. See Installation manual for details on determining which device goes on which bank.
• VP-X Pin Name: Describes the function of that pin. 5A-1 for example is a 5 amp circuit and it is the first five amp circuit. 10A-3 is a 10 amp circuit and is the third 10 amp circuit.
• Power pin name: You can give each pin a name that shows on the EFIS display.
• Current draw: The actual current drawn by a device. It is recommended you measure the ACTUAL current draw of each device prior to installation in the aircraft using an ammeter (commonly available from a friend at no cost or from Radio Shack, Sears, and electronic supply stores for a reasonable one).
• Wire size: the wire size you have specified to go between the VP-X and the device being powered.
• Circuit Breaker: The maximum current allowed for that pin. You can enter any value between 1 and the limit of that pin in increments of 1A. This value is equivalent to a circuit breaker or fuse. If a load draws more than the Circuit Breaker value, that circuit will fault. If too large of a breaker value is used, then the wire may overheat or fail. If too small a value is used, then the device may fault the circuit because it draws too much current.
• Switch: The number of the switch input (switch input 1 through 10) you have specified to control this pin. Or it can be set to 'always on' or 'always off'. Each switch input is labeled 1 through 10. You can assign multiple devices to a single switch, and conversely, a switch can control multiple devices. If you set the circuit to 'always on', it will be on anytime the VP-X is powered (i.e. the master switch is on). Multiple pins can be assignedto a single switch. You don't have to use all of the switch inputs.
• Current Fault detect: The pin can be configured to detect a "current fault" or open circuit. When a circuit with this feature enabled is turned on and does not draw any current for 3 seconds, the circuit is faulted. You can use this to detect burned out lights, faulty boost pump, failed avionics fan, or inop heated pitot tube for example. The minimum detectable current is about 100ma, so this should be used on devices like lights, strobes and loads that draw at least 100ma of current.