Solar issues and wiring the Air Compressor....
The morning after I wired the controller I noticed that although the controller was showing amps in/out it wasn't actually going into charge mode and connecting to the batteries. After some troubleshooting with a meter I found that the factory red power wire going to the solar roof plug was shorted to ground......Ugggg. If I was running an older PWM style charge controller it wouldn't be that big of a deal since I could swap the ground wire over to be power and let the red wire stay shorted/grounded, with a PWM controller the PV and Batt ground can be common. But...I'm running a newer style MPPT controller that is more efficient and requires a separate PV and Battery ground to function correctly.
Factory power wire shorted to ground. Time to get searching for the culprit, at this point I'm suspecting a screw in a wire somewhere or a stray frogs hair.
I connected the meter to the wire and started chasing the wire up to the front lift panel where it goes into the roof looking for a short. I was really hoping the short wasn't up in the roof itself. After a bit I found the short right at the end of the bed, there is a loop in the wire that is tucked back into the campers side where the wire transitions and goes vertical. A staple had been shot directly into the wire at this point during construction. Soon the wire was fixed and panels were back in place.
Almost back together in this pic, just need to apply a new strip of Velcro to secure the Arctic liner back in place.
Yesterday evening I pulled the truck out of the shop to test the panel. Everything is working great! This shot shows the advantage of a MPPT controller, it will take the higher voltage of the solar panel and convert it into extra amperage going into the batteries. The older PWM controllers basically draw down the PV voltage to batt voltage and you only get what is coming into the controller from the PV.
6.1 amps coming into the controller from the 175W panel (with late afternoon light) and the controller is outputting 8.1 amps out to the battery....nice!
Time to wire up the air compressor and hook up the front locker.
The Supplied ARB wiring harness. The quality looks really good, will have to extend the pressure switch and control/trigger wires.
Draining the washer fluid out to remove the bottle, makes access a lot easier.
Pressure switch wires extended, will install loom on the wiring once it's in the truck.
Running the switch wiring and air tubing for the front locker.
Wiring and tubing tucked away in loom and ran across the firewall.
Electrical and air tubing connected to the compressor. I installed the relay close by on an existing stud. I have a plastic cap installed over the air fitting for now to keep nasties out until my purchased cap shows up.
The compressor is a tight fit in this area but works out really well with the limited under hood space.
Connections made to the SwitchPro.
All tested and the Air Compressor and Locker are working great
More to come....
Hodakaguy