User Manual

These compensation rods are used to correct your compass for deviation. When testing a location, you do
not want pre-set corrections in your compass, so neutralize the comp-rods by setting the slotted ends in a
horizontal position.
Begin your test by holding the compass away from any possible interference and observing the compass
reading. Then move the compass into position carefully, keeping it pointed in the same direction. If the
compass reading is different without a change in direction you are observing deviation. You need to find
a location that has less than 15 degrees of deviation on the 4 cardinal points if you intend to adjust your
compass using the compensator rods.
After finding a location you should test for intermittent changes in the magnetic field. With the compass
mounted temporarily in its intended position try moving the steering wheel, throttle controls or anything
else that might cause deviation. It is also advised to turn electrical devices off and on. Please be advised
that a changing magnetic field can not be corrected with compensation and you will need to find
another location for your compass.
Important notes about Installation
 Great care must be taken to mount the compass so that there is no “A-alignment error”. “A-alignment
error” is a constant error on all headings caused by the compass not being pointed in the same direction
as the boat. One recommendation is to temporarily mount the compass using one fastener so if an
alignment error is detected it is easily corrected. Masking tape can be used as a reference or to keep
the compass steady during installation. The remaining fasteners can be installed when you are satisfied
with the alignment.
 If your compass came with mounting screws and they do not meet your needs SELECT MOUNTING
HARDWARE THAT IS NON-MAGNETIC. Most quality stainless steel and solid brass fasteners can
be used. If you are unsure test them with a magnet.
 It is important that you use the mounting gasket included with each Flush and Bulkhead model. We do
NOT recommend the use of bedding compound since some brands contain chemicals that could
damage the compass.
 Most models have built-in lights which will require routing the wire or wires to your power source.
Night Light Wiring
 Most models are supplied with a 12-volt night lighting system. To connect lights to a 24 or 32-volt
system, external dropping resistors are available.
 Some models are available with 24 volt lighting eliminating the need for an external dropping resistor.
 Lights should be wired to an appropriately fused circuit in the electrical system (i.e. running light
circuit), allot 1 amp for the compass.
 Some models have two lights; connect both of them to the same circuit.
For Models with:
 Black Zip-cord: Wire the black wire with the white stripe to positive and the all black wire to ground.
 Gray Zip-cord: Wire the copper colored strands to positive and the silver colored strands to ground.
 Jacketed wire: Wire the red wire to positive and the black wire to ground.
Maintenance
 Ritchie compasses require very little care. To remove salt spray deposits or dirt, rinse the entire
compass with clean, fresh water and wipe carefully with a damp cloth. Important Note: Never Use
Chemical or Abrasive Cleaners.