Lokar Automatic Trans Mount Shifter TH350 - Manual (Page 6)

INS0079 Rev. 07/31/14 Page 6 © 2005 Lokar, Inc.
Neutral Safety Switch Adjustment and Wiring
Step 16: For the neutral safety switch to function properly, the shifter
linkage must be adjusted correctly. Do not attempt to adjust the
neutral safety switch unless you have completed
Step 15.
The Lokar neutral safety switch is a simple on/off, non-directional switch.
The switch passes current (turns on) when the ball is pushed in. It does
not pass current (turns off) when the ball is out at its at-rest position.
Double check to make sure that the bolts connecting the left side
banana bracket to the shifter assembly are tight. Fig. 6
Step 17: Remove the neutral safety switch and washer from the switch plate
on the right side of the shifter using a 7/8" wrench or socket. Fig. 11
Step 18: Loosen, but do not remove, the two 5/16"-24 x 3/8" button head
bolts that attach the switch plate to the right side banana bracket
(the bolts are in curved, slotted holes).
Fig. 11
WARNING: Before taking the shifter out of Park, be sure that the
vehicle’s tires are blocked and the parking brake is set to avoid
movement of the vehicle.
Step 19: Put the shifter into the Reverse position. Reposition the switch plate
so that the hole in the switch plate lines up with the center groove
in the shifter body.
Fig. 12 Screw the provided aluminum adjuster
plug into the neutral safety switch opening. Wiggling the switch plate
slightly forward and back while you are screwing the aluminum adjuster
plug in will help get the shifter body centered on the adjuster plug.
Fig. 13
Step 20: Retighten the two 5/16"-24 x 3/8" button head bolts that attach the
right side banana bracket to the switch plate.
Step 21: Remove the aluminum adjuster plug, and reinstall the neutral safety
switch and washer onto the shifter. Test for continuity by connecting
an ohmmeter lead to each stud on the neutral safety switch. When
adjusted correctly, you will only have continuity between the two
switch studs when the shifter is in Park or Neutral. Continuity in any
other gear requires readjustment of the neutral safety switch or the
threaded rod.
Step 22: Connect the neutral safety switch between your ignition switch and
starter circuits. Check the wiring of your fuse panel:
• If there are (2) connections for a neutral safety switch, run a #12 (or
heavier) stranded wire from these terminals in your fuse panel to
the (2) terminals on the neutral safety switch. That completes the
Neutral Safety Switch wiring.
• If your fuse panel does not have neutral safety switch connections,
locate the wire going from the ignition switch to the starter. If GM
color codes are used, this wire will usually be purple. After locating
the wire, disconnect it from the starter. It must be cut and routed
from the ignition switch to one of the neutral safety switch terminals,
and from the other neutral safety switch terminal to the same stud
on the starter where the original wire was removed. If the wire must
be lengthened, be sure to use wire that is at least the same size or
larger than the original.
Step 23: Reconnect the negative battery cable and check operation. Make sure
that the engine will not start in reverse or a drive gear. If it does,
follow the neutral safety switch adjustment procedure again. If your
car should ever start in any gear other than Park or Neutral, please
readjust the neutral safety switch accordingly. Tighten all brackets
and bolts correctly and securely and there should be no movement
or maladjustment. If you have any questions after following this
procedure, please call Lokar Technical Support.
Step 24: Once the installation is completely finished and the neutral safety
switch is adjusted, remove each of the 5/16"-24 x 3/8" button head
bolts from the banana brackets one at a time, apply blue thread
locking compound to the threads, and reinstall.
For shifters manufactured 1994 and earlier, please contact Lokar for assistance.
To Remove Shifter Knob:
Step 1: Make sure shifter is all the way forward in the Park position.
Step 2: Loosen the jam nut below the shifter knob. DO NOT loosen or remove the
set screw that is in the knob. Fig. 14
Step 3: Turn shifter knob counter-clockwise to remove.
Lokar Shifter Knob Removal Instructions
(For Shifters Manufactured 1995 and Later)
Aluminum
Adjuster Plug
Release
Button
Shifter
Knob
Shifter
Lever
DO NOT
REMOVE
Set Screw Jam Nut
To Install Shifter Knob:
Step 1: Make sure the jam nut is still in place on the shifter lever.
Step 2: Screw the shifter knob onto the shifter lever until the release button
comes up flush with the top of the shifter knob.
Step 3: Tighten the jam nut up against the bottom of the shifter knob.
Fig. 13 Fig. 14