keyless entry issue 03 suburban

Hello and thank you in advance for any assistance you can offer. I'm afraid I'm in over my head and need some help finishing my install of a Remote Starter with keyless entry on my wife's Suburban. Vehicle: 2003 Chevrolet Suburban Z71 Installing: Valiant RS160 Remote Starter with a Valiant Transponder Bypass Kit. http://www.jcwhitney.com/rs160-remote-starter/p2020143.jcwx?filterid=j1 When I began my installation I didn't realize that I needed an interface module for the locks, so I had planned on bypassing the computer and just connecting directly to the power lock motor. I have successfully installed the remote start and bypass modules so that the car will remote start properly. Also I have the keyless entry feature working correctly on the rear doors. I cannot puzzle out how to properly connect the keyless entry to the driver and passenger front doors. I have been using a DirectWire diagram for most of the install. According to DirectWire the grey and tan wires (pin 21 & 20) in the driver door module should interface directly with the power lock motor. I have tried connecting the lock and unlock wires from my remote start directly to the grey and tan wires and that has had 0 effect. The instructions say to "use all wires and diode isolate" but I'm not sure how to accomplish this as I have 0 experience with diodes (I did try to read up on diode isolation, but I'm still not clear on how to do it in this situation). My experience with auto electronics prior to this consists of 7 radio and speaker installs and 1 cruise control system on pre-1995 vehicles and a remote start on an 02 Silverado (that one went a lot smoother...). If someone could please explain to me how to make this work, or better yet provide a picture(s) it would be greatly appreciated. Thanks -Dan

I think this picture from mobileinformationlabs.com is telling me what to do, but I'm not sure exactly how to do it.

While the rear door locks are Type B (-), the front doors are 5 wire (rev) at the switch inside the doors.  You can not connect the (-) output from the R/S directly to these wies.  Here is a link to the 5 Wire (rev) wiring  :  https://www.the12volt.com/doorlocks/page3.asp#5w  This would have to done inside each door.  You could use two DEI 451M modules instead of making up your own relays and fuses.  Here is a link to the 451M install guide  :  https://www.the12volt.com/installbay/file.asp?ID=725

Another, easier, way is with the DEI MultiDL module.  It does all doors via a connection to an OBD2 diagnostic connector wire.  Here is a link to the MultiDL info  :  http://www.xpresskit.com/product.aspx?productid=188  While it has been discontinued, they are still available at various "online" sites.

Soldering is fun!

Thank you for your help, but I'm still in the same place. If possible, lets pretend I'm retarded. (Not a big stretch) So you're saying the picture I linked has nothing to do with what I'm trying to accomplish? Or it just wont work? I have a limited amount of electrical experience, but its almost all [connect wire A to Wire B] stuff. I looked at this before I posted. Still makes no sense to me. Lots of colors and numbers... oooh, pretty. Can I get a more idiot-proof explanation? Sorry to be a nuisance, if I'm hopeless just say so.

The linked picture with the diodes would allow the (-) Lock and Unlock outputs from the RS160 to

perform a Lock / Arm and an Unlock / Disarm operation via the RS160's single Lock or Unlockoutput, without affecting the vehicles normal circuitry or operation.  ( The Lock output is splitvia the diodes and then connected to the vehicles individual lock and arm wires, etc.)  This wouldwork on some vehicles, but not yours.

Your truck is a bit of a hybrid.  The rear door locks are wired / controlled as Type B (-) signals

from the BCM while the front door locks are the Type C (rev) setup.  Why GM designed it that wayis anyone's guess.

The full detailed explanation would be rather involved.  It would include blocking diodes,

basic Single Pole Double Throw relay operation, door lock solenoid control / operation, polarityconversion, remote starter programming / limitations and current handling / fusing requirementsamong other items.  The Type C (rev) wiring is necessary because you are controlling the lockand unlock functions of the each doors' lock solenoid directly. 

Here is a link to DEI Tech Tip 1601 :  https://www.the12volt.com/installbay/file.asp?ID=828

It has a short explanation of the trucks lock circuits and shows the relays, diodes and wiringnecessary using (+) Lock / Unlock outputs from the after-market brain.  As mentioned before, theDEI 451M module can replace some of the relays.  Rather than use 6 relays, 4 fuses, 8 diodes andopen up the front doors, IMHO, the MultiDL module will save time and provide better reliability. 

Soldering is fun!

Ok. so you're saying I should buy the MultiDM, but I'm having no luck finding it online. I can get the DEI 451M, and it probably sounds like a good idea since making my own relays is unlikely. I need two DEI 451Ms right? One each for the driver and passenger doors? Then the colors/numbers should line up with the 5wire diagram posted above if I understand correctly? I really appreciate the help kreg. You are making my wife a happy woman. I might owe you a beer.

PM with info sent....Soldering is fun!