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Date of Service:
Anthony and Bill
Work Done on:
Class A - Diesel
Replace Heart Freedom Inverter with a Magnum Inverter,
Install Battery Monitor Kit with a shunt, Battery
Temperature Sensor and ME-ARC remote.
Evaluation of Service Performed:
Met Anthony while he was working on a Motorhome next
to us. During the conversation, he said he was a
"Magnum Dealer" and was fully familiar with Magnum
equipment and could do this with his eyes closed.
Well, that is apparently what he was doing and it
didn't work out well.
Now, I am no expert at DC power but I do understand
certain do's and don't and can read and understand
basic wiring diagrams and instructions.
1. DC power is sensitive to the proper cable gauge
and length. If you use undersized wire/cable at full
charge it could melt and start a fire.
What he did: Installed an extra 6 foot extra of 8awg
cable on the negative side where the rest is 2awg,
while installing a second shunt where all he had to
do is replace the original shunt with the new one.
No new cable was needed. I didn't see this until the
2. You should install a temperature sensor at the
actual location you want to monitor ambient temp,
not in a location that is at least 10 degrees
different at all times. Magnum docs say at the
negative battery post.
What he did: Tried to install it on a negative
connection point inside the interior electrical bay
not the outside battery bay. We argued a bit when I
watched him do this and I made him move it.
3. Installing the battery monitor kit involves 4
wires. Red to power with a 2 amp fuse, black to
ground, blue to the battery side of the shunt and
orange to the load or charger side of the shunt.
What he did: Red to power with a 20 amp fuse (10x
too big) blue to the load side and orange to the
battery side which is backwards. After he was done
and gone, my amp hours charged IN were running
negative numbers, duh.
4. If you don't adjust the remote to reflect the
total amp hour size of your battery bank your
charger doesn't know how much to charge. He said the
default was fine. Wrong
Any reasonably competent RV repair person could have
handled the install properly, A Magnum "Dealer" if
he really is ought to be ashamed of himself. I
should have just done the install myself and saved
myself the money and brain damage. Anthony will not
be working on my coach again nor could I recommend
him to someone else.