From the 2001 FSM
The Central Timer
Module (CTM) is located under the driver side end of
the instrument panel, inboard of the instrument
panel steering column opening
I'd imagine it's in the same place on a 96.
More copypasta
The base version of the CTM is used on base models
of this vehicle. It is also sometimes referred to as
the Integrated Electronic Module (IEM). The base
version of the CTM combines the functions of a
chime module and an intermittent wipe module in a
single unit. The high-line version of the CTM is used
on high-line vehicles. The high-line CTM provides all
of the functions of the base version of the CTM, but
also is used to control and integrate many additional
electronic functions and features included on highline
models. The premium version of the CTM is the
same as the high-line version, but is used only on
models equipped with the heated seat option.
The high-line and premium versions of the CTM
utilize integrated circuitry and information carried
on the Chrysler Collision Detection (CCD) data bus
network along with many hard wired inputs to monitor
many sensor and switch inputs throughout the
vehicle. In response to those inputs, the internal circuitry
and programming of the CTM allow it to control
and integrate many electronic functions and
features of the vehicle through both hard wired outputs
and the transmission of electronic message outputs
to other electronic modules in the vehicle over
the CCD data bus.
The features that the CTM supports or controls
include the following:
² Automatic Door Lock - The high-line/premium
CTM provides an optional automatic door lock feature
(also known as rolling door locks). This is a programmable
feature.
² Central Locking - The high-line/premium CTM
provides an optional central locking/unlocking feature.
² Chimes - All versions of the CTM provide chime
service through an integral chime tone generator.
² Courtesy Lamps - The high-line/premium CTM
provides courtesy lamp control with timed load shedding.
² Door Lock Inhibit - The high-line/premium
CTM provides a door lock inhibit feature.
² Enhanced Accident Response - The high-line/
premium CTM provides an optional enhanced accident
response feature. This is a programmable
feature.
² Heated Seats - The premium CTM controls the
optional heated seat system by controlling the operation
of the heated seat relay.
² Illuminated Entry - The high-line/premium
CTM provides a timed illuminated entry feature.
² Intermittent Wipe Control - All versions of
the CTM provide control of the intermittent wipe
delay, and wipe-after-wash features.
² Panic Mode - The high-line/premium CTM provides
support for the optional RKE system panic
mode features.
² Power Lock Control - The high-line/premium
CTM provides the optional power lock system features,
including support for the automatic door lock
and door lock inhibit modes.
² Programmable Features - The high-line/premium
CTM provides support for certain programmable
features.
² Remote Keyless Entry - The high-line/premium
CTM provides the optional Remote Keyless
Entry (RKE) system features, including support for
the RKE Lock (with optional horn chirp), Unlock,
Panic, and illuminated entry modes, as well as the
ability to be programmed to recognize up to four
RKE transmitters. The RKE horn chirp is a programmable
feature.
² Remote Radio Switch Interface - The highline/
premium CTM monitors and transmits the status
of the optional remote radio switches.
² Speed Sensitive Intermittent Wipe Control -
The high-line/premium CTM provides the speed sensitive
intermittent wipe feature.
² Vehicle Theft Alarm - The high-line/premium
CTM provides control of the optional Vehicle Theft
Alarm features, including support for the central
locking/unlocking mode.
There is more info in the 2001 FSM, but doing a quick read-through, I'm actually seeing nothing about if it controls the overhead. You'll also need the temperature probe and wire, just FYI. Something else I forgot.
