Will this effect the factory cruise control function?
No. All of the functions will work as they did before while driving. In this case, the cruise buttons are only used to control the function of the high idle while in Park or Neutral.
I just installed this and it is not working, what now?
The most common issue is the connection of the high idle
wire to the brake switch. It may help to strip the insulation on the
high idle wire and a portion of the insulation on the green/white wire
at the brake switch. Then the wire can be twisted together and taped up
or even better, a drop of solder then covered with tape.
If you are sure you have a good clean connection, then we need to
check the green/white wire for power. We should see 12 volts when in
Park or Neutral and the brake pedal is released. If you do not have
power on that circuit, check the 10amp BTSI fuse in the underhood fuse
If you find the fuse to be in good shape, use a test light or meter to ensure you have power at both sides of the fuse.
If you have no power to the fuse, then lets check the reverse lights.
With the key on and engine off, put the gear selector in reverse and see
if the lights are on. If not, lets take a close look at the 20amp B/U
LP fuse in the underhood fuse block and replace if needed.
Will this work if I have a ZF6 manual transmission?
Yes. The install will be exactly the same for the ECM pin
installation. We are using the Shift Interlock feature to supply power
to activate the high idle. The shift interlock is the safety feature
that requires you to step on the brake to remove the gear shift from
Park. The manual transmission does not have this feature of course. It
is recommended to install a switch from an ignition hot circuit to the
end of the wire that would normally attach to the brake switch. The
switch must be turned on to activate the high idle with the cruise
buttons. It is very important that the switch is shut off while driving
or the RPM will be limited. You could also use the switch as a valet
mode if you wish. The limited RPM will not hurt anything, but will very
frustrating to drive the truck.
High Idle, November 8, 2017 By Anonymous (ROCHEPORT, MO)(Verified)
Kit is complete and easy to install with their directions and the video. I did solder my connection to make it more permanent and not cut wires. Took me just under an hour. I really enjoy the control it gives.
LLY HIGH IDLE, October 31, 2017 By John (Staunton, IN)(Verified)
Easy way to unlock Factory program in ECM for high idle. Does not get any more straightforward or easier. Merchant Automotive video on YouTube shows you step by step how to do it and everything in the kit is there. Done and done less than an hours work and you control your high Idle instead of waiting on 33Â° on your LLY.