At this point in time I don't think another inverter is going to be the answer but your second suggestion is more of what i had in mind. Any idea the rough steps I would have to take to try to make something like the parking light switch work for the inverter? Any info such as where to look for wiring diagrams or something would be of great help.
Thanks for responding.
Just modding the switch doesn't work because the inverter uses a momentary contact from the 120v switch to initiate the logic sequence to determine if ithe inverter should turn on and if so at what power level. I don't think the inverter will go into 400w mode if the switch is held on. I modded my 120v switch to toggle on/off because I'm replacing my stock inverter with a 1000w unit and will use the switch with a relay to turn on the new inverter. Modding the switch lets me keep the factory look and it has the illumination and on light built in. If you want to mod the switch do the following:
1. Get a Taco light switch (much cheaper than the FJ version).
2. Remove 120v switch from console.
3. Lay the 120v switch on its side on a flat surface. On one side of the switch you will see a contact block (it has the connector contacts on the end). With a small flat blade screwdriver or knife blade gently pry one side of the contact block to release the 2 small tabs that hold it in the switch body. Now do the same to the other side.
4. Lift the contact block free of the switch keeping the switch body flat on the table.
5. There is a small white plastic piece in the switch body that acts as a stop for the button (1/8" wide about 3/16" long and U shaped) remove and set aside (not needed).
6. Do steps 2, 3, and 4 for the Taco switch. Make sure that you keep the switch flat when removing the Taco contact block there are 2 small wires, actually a spring (straight wire) and the latch (slightly thicker and bent into a squared off U shape.
7. Look carefully at how these 2 pieces are positioned in the Taco switch and move them to the 120v switch. They will lift right out as the contact block is what keeps them in place. Tweezers work well for this.
8. make sure the U shaped latch wire is centered between the sides of the switch body and snap the contact block back into the switch body.
9. Press the button on the now assembled switch (you may have to do this twice) to engage the latch. The switch will now toggle on/off.
It takes less time to actually do this mod than it took me to type the above but it will not make your inverter work the way you want it to. I did it because just changing the button faces (which is not as easy) would not have given me the lighting and labeling I wanted.
I have to agree with FJWolf that for what you want adding a 12v socket and using either a 12v charger or buy a small inverter that plugs into the 12v socket is a simpler solution. Small plug in inverters are cheap and put out the same amount of power that the stock is capable of.