2003 ford explorer fad

Looking for info on a 2003 Ford Explorer with Keyless Entry and a Factory Alarm.  This is my sisters car and I will be installing a Viper 5301 into it after Thanksgiving.  I have done about 10 installs into my kids cars, my car, brothers,  ect ...(Viper 5301, 5701, 571) ... but this will be the first one with a factory alarm.

The remote start wiring part of the install I have no questions about, what I am wondering about is the factory alarm part. 

I have the info on TechTip 1094 and 1093 that address the GEM Wake Up.  

Anything I should be looking for as far as the Factory Alarm causing me problems?   I am installing only a remote start on this.  My sister lives about 250 miles away from me and I want to avoid problems.

Thanks in advance.

Ok, Good info to have.

I will be installing a Viper 5301 with a Frotin Key Override Sl2 for the bypass.  No question on the remote start wiring, hood pin, brake, tach, ect..

I have read that there are several GREEN/ purple wires in that area, so turning the key to unlock is one I had not heard about.   Also from what I have read, I have to use a relay to wake up the GEM with a double pulse unlock wire from the brain or is TechTip 1093 more in line with what I and doing?

OH Yeah.... This for sure has a Factory Alarm... I like how you refered to it as an Exploder. Could be a large Pinto.

Chris,

Thank you for such an extensive write up. With all of that info, I think I could do this install blindfolded! ... LOL..

To answer the two questions you asked:  I had my sister to perform the window down, close all doors, lock the car with the FOB and wait test.  We did this twice, once after 5 minutes and once again after 10 minutes. Same results, Doors does unlock from the switch inside the car, and horn sounds and lights flash when the door is opened.  (I heard the horn over the phone)   So, I don't have to worry about wakeing up the GEM.  And thank you for the info on the rear hatch release from under the drivers seat.   I'll grab it at the doorsill as you suggest.  I think I have all the info I need and no more questions at the moment, so I'll post the results.

Thank you very much

Rich

Just an update.  Was delayed from doing this install in November and didn't get there until this past weekend. It went without any major glich thanks to the help of this site and the kind pros who pointed me in the right directions.  Kind of a tight area to work with on the ignition harness, but do-able. 

Did have an issue with the tach signal. Viper would learn it but not "keep it".  On subsequent remote starts it would start, run for a minuet and the shut off. The explorer did seem to have a rather low idle, so i switched it to voltage and no problem.  I know I have read some where here lately on this site on ford, maybe f150, having a tach learn issue, so I do some researching. I also used a DEI 1100F. Very easy gadget to install and program.

Zerepdivad, you were on the money for the Factory Disarm Wire and its testing. There are three wires the same color in that wire bundle, only the correct one tested out as negative when turning the key. 

Dasbogie, Thank you very much for the photos of the wiring harness. Greatly appreciated on finding that FAD.

Chris, I don't know why, but there was no need to wake up the GEM even though this vehicle has a keyless entry and a factory alarm. This Explorer must have been built on a Monday or Friday.  ha ha

Only wire I could not find in the time I had to work on this Explorer was the rear defrost.  In the past, on my daughters Focus and my Taurus I was able to get at the switch on the dash to activate the rear defrost from there. I tried to locate a wire in the drivers door sill and the drivers rear door sill that was active when defrost was on, but to no avail. 

Long story short, my sister is thrilled with it.  So my thanks to you all.

Thanks Blanx218,

I shall keep that in mind as I plan to get back to it sometime during the summer.  I just didn't have the time to take the center console apart.

Rich