Specifications

JNS Engineering 11 3/18/2013
Remote Start Neutral Safety Switch
First a disclaimer. Installing a remote start capability in a manual transmission
car is not safe, probably voids the security system warranty, and is possibly
against the law. The author takes no responsibility for any consequences from
the correct or incorrect use of the following information.
Now with that out of the way the author recognizes that many people might be
installing remote start into their MTX 3000GT without hooking up any safety
devices to prevent accidental start while in gear. This instruction, if followed
correctly, will provide an additional measure of safety for remote starting.
Benefits
• Prevents remote starting with the car in gear
Parts Needed
• Magnetic switch
o Normally open type (continuity when the magnet is close)
o Recessed mount type (cylindrical type allows perpendicular mount)
o AMS-21 or equivalent is suggested (about $7 at this site)
o Go here for a datasheet for the part
• Other stuff
o I used RTV and a tie wrap to secure the magnet and switch
o I used T-Taps to connect to existing stock wiring
Remote Start Neutral Safety Circuit
The Viper 590x has a Neutral Safety (-) input that we can wire directly to the
magnetic switch and no relays or other circuits are needed. There is also no
need to unplug the clutch safety switch as we will be wiring the remote start
controls using Marc Mayer’s elegant method of interrupting the stock wiring in a
specific location. With this method the car operates exactly as stock, requiring
the clutch to be depressed for normal starts, and yet remote starts by bypassing
the wiring in a different way. More about this in the Viper 590x install section.