Z Flash OBD-II User manual

USER MANUAL
Gateway Bypass Module
OBD-II Switch
Switch
Hardwire
T-Harness
*Patent Pending TheZFlash.com
Required Accessories for Select Vehicles:
OBD-II SWITCH • DODGE
I
JEEP
I
RAM
I
CHRYSLER
Version 1.0

This warranty protects the product(s) specied to be free
from defects in material and workmanship for 1 (one) year.
During the warranty period we will, at our sole discretion,
repair or replace the product(s). This limited warranty does
not cover travel expense or labor charges for the removal and
reinstallation of the product, or any other charges alike. We
are not responsible for incidental damages, including but not
limited to: loss of time, loss of work, inconvenience, loss and/
or damage to personal property, shipping expenses. We are in
no way responsible for any loss or any indirect or consequential
damages resulting from any such defect in material and/
or workmanship whether it’s due to negligence, incorrect
installation, or manufacturer mistake. It is the sole responsibility
of the party initiating a warranty claim to pay shipping charges
associated with returning a product.
• If you do not know what you are doing, do not try.
• We advise professional installation for all products.
• Electrical shock can cause injury or death. Please use proper
tools and protection when installing. Professional installation
is strongly advised.
• Please check for correct installation method
before powering on. Electrical re can occur.
• Do not run any wires in the way of air
bags or other safety devices.
Warranty: Warning:
1
Congrats on purchasing your Z-Flash! Your Z-Flash is ready to start ashing your
factory lights right out of the box. Follow the steps below to get started:
1. If your vehicle is listed on the chart below, it means you need to install the included security bypass
module or t-harness. This should be installed before you install your Z-Flash. Check the respective page
for installation instructions. Once complete, proceed to step 2. If your vehicle is not listed, proceed to
step 2.
2. Plug the switch or hardwire into the 2x2 port on the side of your Z-Flash module. Then plug the Z-Flash
into the OBD-II port. See page 2 for further instructions.
3. Test out your module! If you want to change or edit any of the patterns, use the provided USB cable
and plug your Z-Flash into your Windows computer. Visit TheZFlash.com for full instructions and video
tutorials on how to edit or create your own patterns.
These vehicles require an additional security bypass module:
2018-2020 Jeep Grand Cherokee Page 3
2018-2020 Dodge Durango Page 3
2019-2020 Ram 1500 Page 3
2018-2020 Dodge Charger Page 3
2018-2020 Jeep Wrangler JL Page 3
2018-2020 Chrysler 300 Page 3
2020 Jeep Gladiator Page 3
2018 Ram 1500 Page 4
2019-2020 Ram 1500 Classic Page 4
2018-2020 Ram 2500-5500 Page 4
2018-2020 Dodge Challenger Page 5

LED Indicator Light Button Operation
Red LED = module off One second press = on/off
Green LED = module on Five second press = pattern
change
Green LED blinking then pause =
indicates pattern number 2
1. Connect the module into the vehicle’s OBD-II port. The
OBD-II port is located under the dashboard on the
driver’s side.
2. Start your vehicle.
3. The module will begin to boot and the LED will ash for
ve seconds.
4. When the module is ready to use the green LED will
ash for 5 seconds and then turn off.
5. If you need to disconnect the module and plug it back
in, you will need to follow the boot sequence again.
OBD-II MODULE INSTALLATION
Using your module with the Switch:
1. Connect the 2x2 plug on the switch into the port on the
side of your Z-Flash module.
2. Clean the surface where you want to stick the switch with
alcohol and wait for it to dry completely.
3. Remove the paper backing and stick the switch.
Careful! You only have one attempt to get the switch to
stick. Remember to apply light pressure ensuring the
entire switch mounting pad is making contact with the
mounting area.
4. Press and hold the button on the switch for one second
to activate the module. The light will change from red to
green to indicate the Z-Flash is activated.
5. To change the pattern, press and hold the button for 5
seconds. Below is a full chart on how to use the switch.
Using your module with the Hardwire:
1. Connect the 2x2 plug on the switch into the port on the
side of your Z-Flash module.
2. Set your ash pattern for each mode using the Z-Flash
software available at TheZFlash.com.
3. Follow the chart below to connect modes 1, 2, and/or 3
to +12V.
Wire Color Mode
Blue Mode 1
Yellow Mode 2
Blue and Yellow Mode 3

3
GATEWAY MODULE INSTALLATION
1. Remove the push pins holding the passenger
side carpet silencer panel in place.
The security gateway module
is located on the passenger
side under the glove box.
1. Remove the panel to access under the dash.
2. You can remove the 3 screws and remove the entire
module. Or reach your hand behind and remove the
plugs from the module.
2. Remove both connectors plugged into security
gateway module.
3. Remove the two plugs in the security module and reconnect
to the bypass module.
*You must remove the Z-Flash Bypass Module and reconnect
the Chrysler Security Module when servicing your vehicle
to ensure the dealer tool will operate.
3. Remove the two plugs in the security module and reconnect
to the bypass module.
*You must remove the Z-Flash Bypass Module and reconnect
the Chrysler Security Module when servicing your vehicle
to ensure the dealer tool will operate.
2018-2020 Jeep Grand Cherokee
2018-2020 Durango
2019-2020 Ram 1500
2018-2020 Charger
2018-2020 Wrangler JL
2018-2020 300
2020 Jeep Gladiator

4
T-HARNESS INSTALLATION FOR:
5. The last OBD-II plug on the T-Harness can be put back into the vehicle’s
OBD-II holder where you removed the OBD-II port from in step 1.
Press the tab inside of
the white plug from the
T-Harness and carefully
pull out of the green
Star Board. You may
need to use a small
screwdriver to press
the tab or pull the plug
out of the Star Board.
4. Connect the white plug from the T-Harness into the green Star
Board located up and under the driver’s side dashboard near the
OBD-II port. If you have multiple green Star Boards then you will
need to use the one with the white plugs and yellow wires. You can
use any open port.
3. Connect the female end of the T-Harness into the
vehicles OBD-II port that you removed in step 1.
2. Connect the Z-Flash to the T-Harness OBD-II
port where the green and white plugs exit from.
1. Using the two clips on the side of the OBD-II port, squeeze
and push the port forward to push it out of the holder.
Connects to Z-Flash
Replaces factory OBD-II Port
Connects to Star Board
Connects to factory OBD-II port
This harness prevents you from having to access the security
gateway and install a Gateway Bypass Module on the 2018 Ram
1500, 2019-2020 Ram 1500 Classic and 2018-2020 2500-5500
Rams. Once your T-Harness is installed you will not need a
Z-Flash Gateway Bypass Module. The T-Harness does not need
to be removed when getting the vehicle serviced. The T-Harness
also acts as a splitter and leaves room for an additional OBD-II
device to be connected to the vehicle.
2
2
1
1
3
3
5
4
4
1.
2.
Quick Reference Guide
To Remove T-Harness
from Star Board:
2018 Ram 1500
2019-2020 Ram 1500 Classic
2018-2020 Ram 2500-5500

5
5. The last OBD-II plug on the T-harness can be put back into the
vehicle’s OBD-II holder where you removed the OBD-II port from in
step 1.
4. Connect the white plug from the T-Harness into the green Star
Board. For the 2018-2020 Dodge Challengers the Star Board is
located on the passenger’s side to the right of the glove box. If you
have multiple green Star Boards then you will need to use the one
with the white plugs and yellow wires. You can use any open port.
3. Connect the female end of the T-Harness into the vehicles OBD-II
port that you removed in step 1.
2. Connect the Z-Flash to the
T-Harness OBD-II port where
the green and yellow plugs
exit from.
1. Using the two clips on the
side of the OBD-II port,
squeeze and push the
port forward to push it out
of the holder.
Connects to Z-Flash
Replaces factory
OBD-II Port
Connects to Star Board
Connects to factory OBD-II port
The Z-Flash T-Harness will work with 2018-2020 Dodge
Challenger. This harness prevents you from having to access the
security gateway and install a Gateway Bypass Module. Once your
T-Harness is installed you will not need a Z-Flash Gateway Bypass
Module. The T-Harness does not need to be removed when
getting the vehicle serviced. The T-Harness also acts as a splitter
and leaves room for an additional OBD-II device to be connected
to the vehicle.
2
2
1
1
33
5
4
4
Quick Reference Guide
T-HARNESS INSTALLATION FOR:
2018-2020 Dodge Challenger