- Joined
- Jul 10, 2017
- Posts
- 2,781
- Reaction score
- 2,291
- Location
- Hudson Valley, NY
- Ram Year
- 2014
- Engine
- 5.7L HEMI
I'm about to do this to my truck soon. @kad how did you tap into the F79 fuse? I have an add a circuit but I'd rather not go that route if I don't have to...
I added a pin/wire into the TIPM to use the factory circuit.
The F79 circuit is present, fully powered (and with a fuse already in place on my truck) in the TIPM on 1500s but may or may not come out of it depending on trim level:
- If you have a higher trim truck with the Inverter from the factory, it should be brought all the way into the truck, as it's used as part of the inverter circuit on the dash connection (it tells the outlet to dim it's indicator light when you have the truck's parking lights on). If that's the case for you, then you'll need to tap it either under the TIPM or in the passenger side dash end panel. I do not recommend tapping under the TIPM unless you do a full solder and seal job as the risk of corrosion there is very high.
- If you don't have the higher trim then the circuit stops in the TIPM but you can add the pin/wire to bring it out.
*On 2500+ models it should be already brought inside regardless of trim level as it's used for the cab lights. It can be tapped behind the passenger dash panel on these trucks.
My truck is a 1500 Express and did not have the inverter so I was able to install a pin/wire in the TIPM to complete the circuit It runs my air dam lights, the running light portion of my Big Rig lights and has been brought inside the cab as part of adding the factory inverter.
I also completed the two unused Heated Seat circuits while I was under there, giving me two ignition controlled 25amp circuits to play with. One runs inside to power the rear seat 12V and USB outlets I added (see link in sig) and the other is as yet unused but will be used under hood to power a front camera project I'm working on.
To add the pin/wire you need to disconnect the battery, then disconnect the 12v+ lead into the TIPM. Lift the TIPM out of it's holder, unplug the appropriate connector from the bottom (there are 5 or 6 big connectors under there), add the pin, then put it all back together. It's not hard, but can be a bit nerve wracking. It's been almost 2 years since I did it, but if you need them I can probably hunt down the connector number, pin position, part numbers, etc. for you.
-K