[96ss1664]

When I installed the JMS Fuel Max for my car I noticed that the JMS instructions were not vehicle specific and I hadn’t seen any threads here. So I thought I would try and do my first write up on this topic, hope this helps anyone looking to do this install.

JMS Fuel Max Install
1. Remove the driver’s seat by moving the seat all the way forward to remove the two T-50 Torx bolts, once you remove the bolts slide the seat forward and lift up on the seat to disengage it from the tracks. Unplug the main harness underneath the seat, and now you can remove the seat from the car.
2. Disconnect the battery Ground.
3. Find a suitable location to mount your JMS unit; I mounted mine next to the battery.

4. Remove the side access panel of the center console, start at the front working your way to the back. It’s held in by clips so be careful not to break them.
5. Now it’s time to run the plug in play accelerator activation cable, take the plug for the JMS unit and follow the same path the Red battery cable takes back to the battery.


6. Remove the back of the console to gain access while running the cable from the console to underneath the back seat. They’re two screws on both sides of the console that holds it on.

7. Pull up on the rear seat to gain access to run your cable, still following the Red battery cable


8. Now lean the back part of the seat down where you can see into the trunk, follow the battery cable into the trunk with your cable.

9. Plug the cable into the JMS unit.
10. Time to plug the accelerator harness in.

11. First, cut the terminals off the Black and Grey wires, tape each wire so they cannot make contact with one another or a vehicle ground and then zip-tie the wires to the harness where their out of the way.
12. Unplug the factory accelerator harness; plug the factory harness into the JMS harness. Now plug your JMS harness into the accelerator pedal.

13. Take the black 10 gauge wire from the JMS to the battery or vehicle ground.
14. Run the Red and White 10 Gauge wire from the JMS unit up to the fuse panel on the right side of the trunk, unplug fuse F12/FSCM. Instead of splicing into the factory harness I went with a GTC CT6100 fuse socket connector.



15. Plug the fuse socket into the F12/FSCM spot, use a volt meter to determine which terminal has a constant +12 Volts. Connect the Red JMS wire to the constant 12 volts terminal.
16. Connect the White JMS wire to the other terminal which has no voltage on it.
17. Connect battery ground.
18. Follow the JMS instructions on how to program and setup the JMS Fuel Max.

Here is a diagram if you want to splice in the JMS. Found this on a CTS-V forum.


Here is a diagram if you want to use the Fuse Socket.