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

Garmin G3X Touch GDU 460/465
pin name	actual current draw	circuit breaker value	min wire size	VP-X pin	backup?	current fault detect?	switch	bank preference
Garmin GDU 460	2.0A	5.0A	20g	J12-3	Method C	No	Avionics Master	Bank A
notes: Left Monitor
Garmin GSA 28
GSA 28 - Pitch	2.8A	5.0A	20g	J8-4	none	Yes	Avionics Master	Bank A
notes: Autopilot Servo
Garmin Misc.
Garmin Misc.	1.2A	5.0A	20g	J8-6	Method C	Yes	Avionics Master	Bank B
notes: GEA 24 (EIS) .4A , GSU 25 (ADAHRS) .2A , GMC 307 AP (Ctl Pnl) .1A , GAD 29 (Data Con) .1A , GI 260 (AOA) .4A
Garmin GDL 39R
Garmin GDL 39R	0.5A	5.0A	20g	J8-1	none	Yes	Avionics Master	Bank A
notes: ADS-B Receiver. Current is TBD
Garmin GTR 20 Remote comm
GTR 20 Remote	7.5A	8.0A	18g	J12-1	Method C	Yes	Avionics Master	Bank A
Garmin GTX 23 ES Xponder
GTX 23 ES	3.1A	4.0A	20g	J8-3	none	Yes	Avionics Master	Bank A
Audio Panel
Audio Panel	3.5A	5.0A	20g	J12-7	none	No	Avionics Master	Bank A
GRT Mini EFIS
GRT Mini	0.3A	5.0A	20g	J8-7	none	No	Avionics Master	Bank B
Garmin GTN 650 (14v)
650 Nav	2.2A	8.0A	18g	J10-5	none	No	Avionics Master	Bank A or B
650 Comm	0.5A	10.0A	18g	J8-2	none	No	Avionics Master	Bank A or B
Garmin GSA 28
GSA 28 - Roll	2.8A	5.0A	20g	J8-5	none	Yes	Avionics Master	Bank A
notes: Autopilot Servo

Lights

Landing light (100W)
pin name	actual current draw	circuit breaker value	min wire size	VP-X pin	backup?	current fault detect?	switch	bank preference
Left Landing lgt	3.8A	5.0A	18g	J12-8	none	Yes	Land Lt	Bank A
notes: AeroLEDS Sunspot 36LX
Taxi light
Right Taxi lgt	3.8A	5.0A	18g	J10-7	none	Yes	Taxi Lt	Bank B
notes: AeroLEDS Sunspot 36LX
Nav lights (LED)
Nav lights	1.4A	5.0A	18g	J10-10	none	Yes	Nav Lt	Bank B
notes: (2) Aveo Ultra Aurora + (1) Aveo PosiStrobe XP
Strobes
Strobes	9.2A	10.0A	18g	J10-3	none	Yes	Strobe Lt	Bank B
notes: (2) Aveo Ultra Aurora (wings) + (1) Aveo PosiStrobe XP (tail)
Taxi light
Left Taxi lgt	3.8A	5.0A	18g	J12-12	none	Yes	Taxi Lt	Bank A
notes: AeroLEDS Sunspot 36LX
Landing light (100W)
Rt Landing lgt	3.8A	5.0A	18g	J10-6	none	Yes	Land Lt	Bank B
notes: AeroLEDS Sunspot 36LX
Eyeball lights (LED)
Eyeball lights	0.2A	1.0A	20g	J1-2	none	No	Cabin Lt	Bank A or B

Accessories/Ignition/Other

Pitot heat 2
pin name	actual current draw	circuit breaker value	min wire size	VP-X pin	backup?	current fault detect?	switch	bank preference
Pitot heat 2	12.0A	15.0A	14g	J12-2	none	Yes	Pitot Heat	Bank A
notes: Garmin GAP-26 Heated Pitot
Boost pump
Boost pump	1.5A	5.0A	20g	J10-8	none	Yes	Boost Pump	Bank B

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	J1-1	none	No	always on	Bank A
SD-20 BU Alt
Alt - BU - Field	2.5A	5.0A	20g	J10-2	none	No	BU Alternator	Bank B
Alt - BU - Vsense	0.1A	2.0A	20g	J10-4	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.