GPS? Blink Out

[Islandtrader]

Originally Posted by Islandtrader

Installed my garmin for a trial run (check out build thread to see mods) and the short answer is I like it.

Now the problem (I think I know one solution but seeing if there is something else I can do) the gps is hooked up to the house battery. I have a starting battery on its own. GPS is on and when I start the boat everything is fine no blink out. However when running I went to use the mercruiser power trim and NYC black out on the GPS(trim is on house battery). Had to hard start GPS.

Problem solved

The long answer to an easy fix.

After running a temp. wire from battery to power trim on starting battery everything worked fine. Then at the Seacraft outing while at idle speed I turned on the blower for the motor and the gps blinked out...hard start

On Sunday on the way home the gps crapped out and would not come up to load. It would show the logo and then die. I really need this.

Monday call Garmin and they tell me go check my house battery...sure enough it was on its last legs, enough to run stuff but not taking a real charge. so just under 8v and the Garmin would not fire up. Tried gps on starting battery turned on trim and blower and it just smiled pretty and stayed running.

[DonV]

Very good Terry!!! I had the same thing happen to me with my Raymarine....they are very sensitive to low voltage, bought a new deep cycle house battery and a two bank on board charger, all fixed. When you brought it up, we were thinking just a "spike" in voltage when you kicked on the blower . Take care!!

[erebus]

When I rehabbed my 18sf last winter I installed a dedicated starting battery and a dedicated "house" battery (electronics etc).
I tied them together with this kit from Blue Sea:
http://www.bluesea.com/products/7649...tery_Kit_-_65A
A single on off switch that independently switches each battery on and off and an automatic charging relay to keep them both topped off while also keeping them isolated from each other.
Worked flawlessly all summer.
You could even throw an emergency parallel in there if you wanted some backup starting capability.

[Boatboy6]

The blue seas kit already has an emergency parallel built in. Still debating installing one on my boat, whenever I start my motor it knocks out my gps.

[Islandtrader]

To solve that problem Blue Seas has the starter interrupt on there ACR unit. I have the same switch as above plus the Automatic Charge Relay system on my electrical hook up.

[DonV]

Ditto on the Blue Seas ACR kit, along with the other Blue Seas items I see in the picture.....worth the extra few bucks!!!

[erebus]

Originally Posted by Islandtrader

To solve that problem Blue Seas has the starter interrupt on there ACR unit. I have the same switch as above plus the Automatic Charge Relay system on my electrical hook up.

Oh... Well then, carry on.

Originally Posted by Boatboy6

The blue seas kit already has an emergency parallel built in.

Doh!
Thats right. I forgot about that "third" battery switch position.
So far havent needed it!