Rsva-3 Installation Instructions; Install The External Shunt; Install The Va-1A-Xx Instrument; Route The Shunt Wires - Electronics International VA-1A Operating And Installation Instructions

The RSVA-3 switch is used in conjunction with a VA-1A-XX external shunt unit in a twin engine
aircraft to monitor both alternator outputs and the battery charging and discharging currents.
1. Install the External Shunts
Note: If you are replacing an existing ammeter, the shunts may already be mounted in the air-
craft. If this is the case, you should have ordered a VA-1A-XX unit that matches your existing
shunts.
The external shunts should be installed in an appropriate location that minimizes the routing of
main cables (refer to the wiring diagram at the end of this section). Also, they should be mounted
in a location where inadvertent damage cannot occur. If the shunts can be accessed easily, they
should be covered. When mounting the shunts, use self-locking or wired nuts.

2. Install the VA-1A-XX Instrument

Install the VA-1A-XX in the aircraft as described in the VA-1A, VA-1A-XX Installation Instruc-
tion section of this manual.

3. Route the Shunt Wires

Route the wires from the + and - terminals of each shunt to the RSVA-3 switch mounting location
via a one amp fuses (see the RSVA-3 Wiring Diagram at the back of this section). Pair the wires
for each shunt with the corresponding wires in the RSVA-3 harness and crimp a female connector
onto the wires connecting to the "+" terminal of each shunt and a male connector onto the wires
connecting to the "-" terminal of each shunt, and a male connector on "+" wire of the harness
(solid color) and a female connector on the "-" wire of the harness (white with stripe). Red slip-on
connectors are provided in the RSVA-3 kit. When preparing the wires to be crimped, strip each
wire and double the wires over. Doubling the wires over and agood tight crimp are critical for a
good reliable connections.

4. Route the Instrument Wires to the RSVA-3

Route the brown and orange wires in the VA-1A-XX instrument wire harness to the RSVA-3
switch mounting location. Crimp a female connector on the brown wire from the VA-1A-XX and
a male connector on the brown wire in the RSVA-3 harness, and a male connector on the orange
wire from the VA-1A-XX and a male connector on the orange wire in the RSVA-3 harness. Red
slip-on connectors are provided in the RSVA-3 kit. When preparing the wires to be crimped, strip
RSV RSVA-3 RSV A-3 A-3 A-3
RSV RSV A-3
Installation Instructions Installation Instructions Installation Instructions
Installation Instructions Installation Instructions
Connect the shunt wires to the RSVA-3 harness.
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