sesykes71

I am using the trailer connection. With a trailer plugged in and on shore power the trailer keeps the truck charged. I only use this when camping. Small trickle chargers don’t provide enough current. You can use a dc power supply but must limit the voltage to 13.6 to 13.8 volts.

I only use mine while it is plugged into our travel trailer with the trailer plugged into shore power. I verified that the trailer brings the battery to 13.50 volts. Measure someplace on the vehicle, I used the wire going to my cap light, with the vehicle off you should measure about 12.50 volts. With the ignition switch in ACC and the charger on you should get about 13.60. Probably your trickle charger just doesn’t provide enough current to overcome the load from the WiFi module.

I have been running my 15 Silverado 5.3 as was suggested, ACC position with the trailer plugged in and on shore power for an hour now. I should have brought a voltmeter but I believe it is charging the vehicle battery. If it isn’t the wife isn’t going to be too happy in the morning. Update: verified with a voltmeter that the trailer connection does indeed charge the truck. I measured about 13.48 volts while plugged in and the fan on the trailer inverter runs periodically.

I have heard that Hellweg springs are noisy. It sure looks like an easy installation though.

I wonder what effect leaving the key on has to the rest of the circuits? Calgator73 is doing this on a diesel, what about a gas truck?