more than .05 volts you have an electrical leakage problem or a problem in the
negative battery circuit. If you have electric downriggers, be sure to turn them on
as part of your checkout. To test them, you will have to lower them deeper and
then hold your positive lead against the moving wire as it rewinds.
Base Readings: If your electrolysis reading is too low (.1 to .5 volts), your zincs
may need cleaning or replacing, or your boat may not have enough zinc. You
should also check the bonding connections for improper bonding.
If your reading is zero or negative, your downrigger may not be insulated from
the hull, your zincs may need cleaning or replacing, there may be electrical
leakage from a positive connection somewhere, or your hull may not be properly
bonded.
If your reading is too high (over 1 volt), your downrigger may not be insulated
from the hull or your downrigger wire may have been replaced with something
other than stainless steel (ie monel)
Installing Your Black Box
Your Black Box should be mounted in a dry location, as it is water resisitant but
not waterproof. You can mount it either a vertical or horizontal surface and can
Red
(Positive)
AGC 3 amp
Fuse
12 Volt Source
Quick Disconnect Plug
White Load Line, 20 ft.
Black
(Negative)
White
(Load Line)
Quick
Disconnect
Plug
Distribution
Post
Metal Contact
Sleeve
Mount the Distribution Post near the
location for the Black Box. Connect
the 20 foot long White Load Line.
Page 4
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