Frequently Asked Questions

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What is the difference between your cable and the Chrysler 12+8 cable or block-style bypasses such as ECRI?

Our cable does not require accessing the SGW wire harness. Instead, it installs under the dash using the factory OBD port and the CAN HIS and CAN C star connectors found on all 2018–2024 Ram trucks. This provides a much simpler and cleaner installation—especially on 4th Gen Rams, where the SGW module is located behind the radio, and 5th Gen HD Rams, where the SGW module is located behind the instrument cluster

Why does your cable have two leads instead of one like other bypass cables?

Ram vehicles utilize two different CAN networks, depending on which module is being accessed it is either on the CAN C or CAN IHS network. Single lead bypass cables only provide access to the CAN C network. Our bypass cable allowing access to both networks.

What is the small adapter included with your bypass cable?

The included adapter makes the bypass cable fully universal for all 2018–2024 Ram trucks (4th Gen, 5th Gen, 1500’s, and HD models). 4th Gen 1500s use a different CAN star connector. The adapter allows proper access to the CAN IHS network on those vehicles. The adapter is ONLY required for 2018–2024 4th Gen 1500s. It is not required for any other Ram models

Do I need to leave the bypass cable plugged in?

The No you do not need to leave the cable plugged in.  Once you have made your changes with alfaobd or jscan, you can remove the bypass.  It is the user's discretion if they choose to remove the cable or leave it plugged in.  Since the star connectors can be difficult to disconnect, another option would be to disconnect the OBD end from the factory port and tuck the bypass up under the dash until it's needed.  This way whenever the factory OBD port is access, the bypass cable is not being used.

What is the extended bypass cable used for?

The extended bypass cable was specifically designed for 2018–2024 4th Gen 1500 (DS) trucks in UK and Australian markets that have undergone right-hand drive (RHD) conversions. During these conversions the star connectors remain on the left side of the vehicle and the OBD port is relocated to the right side. The extended cable provides sufficient length to connect both the OBD port and the factory star connectors.

Note: Some customers have reported successful use of the extended cable on certain Jeep models where the star connectors are located on the passenger side. However, these applications have not been officially tested by Masshole Custom Wiring. Compatibility with Jeep vehicles is not guaranteed and use of an extended bypass cable is at the customer’s discretion.

Will this work for a 2009-2012 Ram?

No, unfortunately this will not work for those year Rams.  There was a major electronics overhaul on Rams after the 2012 model year.  The parts required for this upgrade are specific to the 2013+ Rams.  The only way to add a push button start ignition to a 2009-2012 Ram would be through an aftermarket solution.

Will a used RF Hub and fobs work?

No, a used RF hub will not work.  The previous vehicle's VIN is written to the hub, Masshole Custom Wiring is not aware of any solution to remove that VIN to allow a new one to be programmed.  Because of this, when the vehicle is started, a VIN mismatch between modules will be identified which will result in the truck shutting down.

Used fobs will work but ONLY if they have been professionally cleared by a locksmith so that they are ready for programming.  This is not something that Alfaobd can do.

Will my aftermarket or OEM remote start still work after this upgrade?

In most cases an aftermarket remote start system will require reprogramming for the change in ignition switch.  Please be aware that you may lose that function until the system has been reprogrammed.  For OEM remote start systems this upgrade will have no impact.  They system should continue to function as normal after the install.

Why did my TPMS go off?

TPMS signals are picked up by the RF Hub module.  Once the module is replaced, the TPMS sensors need to sync up with the new module before the system can register the tire pressures.  If the TPMS sensors are OEM, they should auto sync after a short drive.  In some instances, you may need to use alfaobd or jscan to force a re-sync.  If the sensors are aftermarket, you may need to have a shop sync them back up.

Alfaobd is asking for a 5-digit PIN, my original PIN is only 4-digits, what do I do?

At the time of the writing of this FAQ, there is a bug in the current version of alfaobd.  The developer has not fixed the bug in some time.  Due to this, a QR code has been included in the installation instructions for an older version of alfaobd that does not have the bug in it.  You will need to uninstall your current version of alfaobd and then install the older version via the QR code link.  Please not that Windows users may need to deregister their license first and then reregister once the older version of alfabod is installed.

My new fob is not functioning properly, how do I fix it.

Masshole Custom Wiring only recommends OEM fobs for this upgrade.  If passive entry is not working, or the truck is not detecting the fob when trying to start, this could be caused by an aftermarket fob.  If the fob is OEM, make sure any mobile electronics are removed or turned off and try again.  Some electronic devices can cause interference with the antennas being able to pick up the fob.  Things such as wireless car chargers, apple air tags, and phones can have the potential to cause interference.  It has even been documented that LED bulbs have the potential to cause interference.  If all of this has been ruled out, you should go back and inspect all your wiring to confirm everything has been installed properly.  We recommend taking pictures of all the connections and emailing them to us for review (support@massholecustomwiring.com).

I already have an aftermarket remote start, will that still work?

Yes, adding OEM remote start should have no effect on an aftermarket kit already installed.

Do I need a new RF hub for remote start?

No, you do not need a new RF Hub.  All RF hubs are remote start capable.

Do I need a new fob for remote start? Not if you currently have a turn-key fob.  All turn-key fob circuit boards are the same, you would just need to replace the rubber overlay on the fob for one that has a contact for the remote start button.  Cheap overlays can be found on amazon like this.

I did the installation but my remote start is not working, what do I do?

There are multiple things you should check, first and foremost, we do not recommend the use of aftermarket hood latches as they are prone to failure.  If you are getting a hood ajar message and the latch has been adjusted properly, it may be due to a faulty latch.  Otherwise, make sure all of your setting updates took and make sure you do an RF Hub Reset/Replace after the settings were changed and the install was completed.  Make sure you drive your truck for a quick 2 minute drive after all of this (the truck needs to be driven before remote start will kick in).  Make sure you are not inside the vehicle when trying to remote start.  If you followed all of this and you still don't have remote start, make sure your gas light is not on and you do not have a check engine light.  As a safety precaution, OEM remote start will not work under either of those conditions.  Stand next to the vehicle with a good view of the instrument cluster (rolling the window down is recommended).  Typically if there is an issue with the system a message will be displayed on the instarument cluster when trying to start it.  Check for a message here.  Finally, double check al of you rwiring to make sure nothing was pinned in the wrong location.  It is recommended to take pictures of all the pinned wiring and emailing them to us at support@massholecustomwiring.com so that we can double check your work.

I can't switch between the cargo camera and the backup camera, how come?

Yes, If you have a factory 2013-2015 8.4 Uconnect radio installed in your truck, the only software version available that works with both the backup camera and the cargo camera is version 17.11.xx.  All other radios and software version should work.

My camera connector is a fakra/coaxial connector, your harness is a 6 pin, why?

The harness that we offer is for the analog cargo camera which has a 6 pin connector.  5th Gen Rams also have a digital cargo camera option but it requires a Central Vision Processing Module (CVPM) to be installed in the truck to work.  The digital camera (fakra/coaxial) connector does not work in 4th gens and would require additional hardware, wiring, and programming to work on a 5th gen.  We do not currently offer any solutions for the 5th gen digital cargo camera.

Why am I getting a blue screen when the cargo camera is selected? 

In most cases, this is caused by the camera wiring being pinned to the wrong locations somewhere along the line.  It is highly suggested to go back through your install and double check all the wiring as well as taking pictures which you can email to us for verification (support@massholecustomwiring.com).