2001 mustang and viper 5901

I am going to install the viper 5901 on my 2001 ford mustang v6 3.8L. My car has been driving me crazy since it doesn't have keyless entry or an alarm system. I just finished installing a high end stereo system by myself and I want to protect my investment.This is going to be my first intall and I have prepared as much as I could by searching in this forum but I still have a few simple questions.

Are there any modules like an xpress intall kit that would simplify installation, and which bypass module do I need to get? Are there any other items that I need to purchase to install the viper 5901. Also I have read about some people using diode isolate, is this thing only needed when installing the window module or would I need to get diodes for my install? If so, what kind and where do I get them.  Thanks.

Hooking up alarms requires much more skill than installing sound systems.

By the questions your asking you should have this done at a shop. If you insist on trying it yourself then we are here to help as best we can.

The only module for this is the PATS bypass module. I think its easier to remove the chip from your key and remove the PATS transponder ring from the ignition harness and affix the chip to ring. Everyone else on this site will disagree with me but it should only be done if your are a seasoned alarm installer

go to this website and sign on to get the wiring info for your car http://techservices.codesystems.com

I say forget the window modules. Your a/c will kick in when you remote start

I just started doing the install and I realized that the output for the door locks on the viper unit is negative while the wires on the diagram are positive, I checked the wires with the multimeter to make sure and they are positive.

My question: Is there another wire that I can connect the door locks that receives a negative signal or will I have to use a relay to convert the signal to a positve one. If a relay is needed, what kind, where to get. Do they have them at RadioShack, I bought some diodes but I didn't check to see if they had relays.

Look for a SPDT relay. Almost any auto parts store should have relays. You will need diodes if you are using independent door triggers rather than the domelight. As for a bypass, I would suggest an idatalink ads-tb, rather than "pulling the chips" and bypassing the PATS...which IMHO, is just plain lazy.

You do NOT need relays for the door locks. Vipers blue wire is Lock(+) green is Unlock Positive

You only need a relay for trunk pop and one for Domelight Supervision

Use the ALL door trigger wire and you wont need diodes for the individual door triggers

You can get away with using only 1 diode for the trunk trigger. Tap into the BROWN / WHITE directly at the GEM module, then go to the trunk light and cut the (+) lead to trunk light and install 1 diode. This prevents the ground backfeed from travelling thru the bulb filament when GEM shuts down power

Also, mikvot was right about module, I was just proposing a cheaper , effective way to override your PATS system. At one point, for about 1.5 years, there was no modules availible to installers and when they did come out with them the customers had to donate a key to be installed in a 556U. Now the customer had to go purchase another key to have as a spare for a couple hundred bucks. Sometimes the customer only had 1 key.

End result, it is much easier to install a module that cost you $50+. Personally, I have no intention of making Fortin, I-Datalink, and the such any richer. I would rather save the customer money and put the extra bucks in my pocket.

The signal on the 5901 is negative! You would need two relays or a 451m from dei!

If you have two working non-clone keys (needed to program the bypass module), a bypass module is the way to go.  Here is a link to a nice unit for a fair price:   https://www.the12volt.com/installbay/forum_posts.asp~TID~121849~PN~1

Here is a link to a relay diagram for your  (+) door locks with a (-) output from the Viper.   https://www.the12volt.com/doorlocks/page3.asp#3wp