GPS shut off

[fullbull]

My Garmin GPS shuts off when any of my pumps are turned on,bilge or washdown. I realize it's a voltage drop...any cure?

 

[vipzach]

Re: GPS shut off

It is either ground or power. Try pulling the power/ground from somewhere else. Could also be corroded wires. I would bet that pulling them from a different source will cure your problem, may even have to go all the way back to the battery.

 

[jlinder]

Re: GPS shut off

Good advice.<br /><br />You could try checking a couple of things.<br /><br />1. Check the voltage and record what it drops to.<br />2. Measure the voltage from the neg. terminal of the battery to the neg. wire going to the GPS. When you turn on the pumps does it go above 0 volts? If so you have a voltage drop in the ground and you might want to check out the ground wiring and/or replace the ground wire with something heavier. (There is probably one wire from the battery neg. to the fuse panel area.)<br />3. Do the same measurement between the battery pos. terminal and the power lead to the GPS. If it has a voltage on it when you turn on the pumps you have a voltage drop on the power lead side. Check connections there and/or look at a heavier wire.<br /><br />Record and let us know what your measurements are. It will be interesting.