'05 dodge grand caravan remote start

The aluminum foil test is easy, inexpensive and non-invasive.   If your minivan does not have the Sentry system, your R/S install needs will change. If you plan on keeping this minivan for a while and will be driven by you and the Mrs., transporting the family around, I would find the money to go to the dealer and get a standard ( non-RKE ) key made and programmed to the vehicle. There are several good reasons : 1. You only have one key, if you loose it, you are SOL. 2. With two working, non-clone keys you can buy two more blank transponder keys off EBay for $13, get them cut for $4 and program them yourself. ( You can have a total of 8 keys programmed.) With these working, plain keys you have more options when adding the remote start / bypass module. The Avital 4113 is a one button R/S system. You will still use your Factory Key FOB's buttons to control the locks. The 4113 does have the capability to unlock the vehicle during the remote start run time ( with a bypass module that supports the locks or a DEI 451M module ). Something to think about : If your van has power sliding door(s), certain bypass modules can allow you to control them with the after-market remote starter's FOB.   This would be very handy if using a standard key ( non-RKE ). If you have a transponder immobilizer system and only one working key, you will need a bypass module and this bypass module must be able to be programmed with one key. Which bypass module your choose will depend on your budget and available sources. My first choice would be the iDatalink ADS DL or ADS AL CA flashed with the DL CH6 firmware. Typical cost will be around $60 and you must obtain the module from a source that will flash it for you with the DL CH6 firmware prior to shipment. Using this bypass module will eliminate the need for a 30/40 Amp SPDT relay and a 180 ohm resistor that is used for the Starter MUX wire. More info is available at : http://cdncontent2.idatalink.com/corporate/ Content/Manuals/DL-CH6/ ADS-AL(DL)-CH6_20110829.pdf The Fortin EVO-ALL is a good choice but also needs to flashed with the correct / specific firmware for your application. It is even possible to flash it with firmware that will support the Avital 4113's D2D port. The best / safest route is with W2W connections between the Avital and bypass module. In W2W mode you will need the Starter MUX relay and resistor mentioned above. Here is a link for more info : https://ifar.ca/download/9501/ evo-all_chrysler_dodge_jeep. rev-20130527.pdf XpressKit makes the DB-ALL and XK09 bypass modules that can be flashed with the correct firmware and used on your minivan. I am not real familiar with these bypass modules. Here is a link to their site : http://www.xpresskit.com/ VehicleCompatibility.aspx? p=null&year=2005 &make=Dodge/Ram &model=Grand%20Caravan &ps=1&s=0&c=0 Another option is from Fortin. Their INT-SL+ comes preloaded with firmware and is a solid unit. Here is the install guide for this module : https://ifar.ca/download/3966/ int-sl%2B_installation_guide. rev-20120308.pdf As you can see, there are many options and ways to make this upgrade to your minivan.Soldering is fun!