2004 F350 Superduty Powerstroke Remote Start

I am looking to install a remote start and security system in my 2004 F350 Powerstroke.   I found a wiring sheet for it but where do I get my Tach signal for my Remote start? Will my diesels High idle kill the remote start? How do I know if I have a GEM Module?   I am pretty good with wiring and can figure most things out.   I do have a question tho when it says for example (Door Unlock Lt Blue/Red -) what is the - vs a + is it grounding out that wire to make an unlock?I do not think you can name many great inventions that have been made by married men.

IRECTWIRE™ WIRING INFORMATION - FORD / F SERIES SUPER DUTY / 2004 / Remote Start 12volts yellow & lt. GREEN/ purple   +   ignition harness Starter green   +   ignition harness Second Starter N/A        Ignition RED / lt. green or WHITE/ yellow   +   ignition harness Second Ignition N/A        Third Ignition N/A        Accessory gray / YELLOW & RED / black   +   ignition harness Second Accessory blue/lt. green   +   ignition harness Keysense   Power Lock see notes        Notes: Without keyless entry use pink / YELLOW for lock and pink/lt. green for unlock. They are 5 wire reverse polarity mastered from the driver switch and found in either kick panel. With keyless entry use WHITE/ red for lock and BLACK/ white for unlock. They are negative trigger and found at the VSM. On the vehicles with keyless entry the GEM shuts down after the doors have been locked for a certain time period, to wake up the system refer to DirectFax document 1094. Power Unlock see power lock notes        Lock Motor pink/black   5wi VSM Notes: The VSM (Vehicle Security Module) is to the right of the accelerator pedal above the transmission hump below the radio. Not accessible from radio opening. Unlock Motor RED / orange   5wi VSM Notes: The VSM (Vehicle Security Module) is to the right of the accelerator pedal above the transmission hump below the radio. Not accessible from radio opening. Parking Lights+ brown   +   headlight switch Parking Lights- N/A        Hazards same as turn signals        Turn Signal(L) lt grn/wht (F), lt grn/org (R) +   steering column Turn Signal(R) wht/lt blu (F), org/lt blu (R) +   steering column Reverse Light BLACK/ pink   +   fuse box Door Trigger BLACK/ lt. blue   +   passenger kick panel Dome Supervision use door trigger        Trunk/Hatch Pin N/A        Hood Pin N/A        Trunk/Hatch Release N/A        Power Sliding Door N/A        Factory Alarm Arm   Factory Alarm Disarm   Disarm No Unlock   Tachometer NOT RED / lt. green   ac   any ignition coil Notes: On diesel vehicles the tach wire is GREEN / WHITE in a 5 wire harness held up with white tape behind the parking brake release. Wait to start see DirectFax document 1091        Brake Wire lt. green   +   brake pedal switch Parking Brake lt. GREEN/ red   -   parking brake switch Horn Trigger blue   -   steering column or VSM Notes: The VSM (Vehicle Security Module) is to the right of the accelerator pedal above the transmission hump below the radio. Not accessible from radio opening. Memory Seat 1 BROWN / lt. green   -   memory mod under dr seat Memory Seat 2 BLACK/ orange   -   memory mod under dr seat Memory Seat 3 N/A   -       Immobilizer Bypass Module: Required: No Type: N/A Part #: N/A Notes: N/A         This wiring information is being provided free of charge on an "as is" basis, without any representation or warranty. It is your responsibility to verify any circuit before interfacing with it using a digital multimeter. Directed electronics, Inc. assumes no responsibility with regards to the accuracy or currency of this information. Proper installation in every case is and remains the responsibility of the installer. DEI assumes no liability or responsibility resulting from improper installation, even in reliance upon this information. I do not think you can name many great inventions that have been made by married men.

You have a 2004 which does not have a GEM. It has a VSM. A (+) means that wire, signal, or output is a Positive voltage, measured to ground. A(-) means that wire, signal, or output is a Negative voltage, measured to ground. Read your above, it tells you where the tach wire is.

Not to complicate your day but what exactly is a GEM and a VSM? Just for curiosity sake.   I also see the section on the Tach now apparently I am blind..   I was looking at getting the Excalibur AL-1860-EDPB is this a good unit? It got good reviews but I just dont want to get stuck with a total POSI do not think you can name many great inventions that have been made by married men.

Not familiar with Excalibur. Can't comment. Generic Electronic Module and Vehicle Security Module. The GEM performs the functions of a Body Controller. The GEM was 99-01. The VSM in 01-07 doesn't perform as many functions as the GEM did. A lot of the GEM's functions are now performed by the instrument cluster. You can tell if an early Super Duty / Excursion is GEM or VSM by looking at the odometer. The old dial analog is a GEM, and the electronic digital odometer is a VSM. The electrical systems and layouts in the SD's have undergone several major redesigns during its evolution. I participate on Powerstroke forums, mostly in the 7.3 section because that's what I own. When the guys don't give their year, it's tough to advise them because there are significant differences between them.