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    Garmin GMR21 problems...

    Thanks for the reply guys, I am running a 25'2 Sportcraft, Mercruiser 5.7, and yes I do see a voltage drop when the motor is started...should add a battery onboard just for the electronics...probably a wise decision since I have a ton of them now..
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    Garmin GMR21 problems...

    I am almost think at this point to get a seperate battery for my marine electronics, I have so much other stuff running...thoughts, this might be helpful?
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    Garmin GMR21 problems...

    Also, can anyone confirm the fuses rating on the inline fuse provided by Garmin for the power cable, I think it say 6 1/4 but my eyes aren't that great. Thanks.
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    Garmin GMR21 problems...

    Ok, My brand new 4208 came in today, as well as my GMR21 radome, had everything hooked up nicely...and then no power, I check my RJ-45 connection, wires were in order, copper shielding tape on the draw wire, not sure what is going on...The battery that it is connected to os about 20 ft away from...
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