2007 Honda CR-V, Viper 4105V With DB3

I purchased a Viper 4105V/DB3 combo, the DB3 came programmed for the '07 CRV. I got both modules wired per the DB3 wiring diagram, and only the door lock/unlock functions. The viper remote arms and disarms the factory alarm, flashes the P lights, and flashes the blue security LED on the Viper antenna, so I believe the DB3 has been flashed correctly, but the remote start does not respond. The vehicle is a key start. Just to note my skill level, I am a Mechanical Engineer, and have been building and restoring automobiles for over 40 yrs. I have built and reconstructed wiring harnesses. To give some particulars on the installation: I got a detailed wiring diagram for the DB3 on the 2007 CRV, but nothing specific on the Viper 4105V. The DB3 diagram just shows a block for a remote start module with only 7 of the many wires connected to the car. I made all the instructed DB3 connections, and the indicated connections on the 4105V module with the exception of the hood pin (waiting to test if needed, I believe there is a factory hood open signal). On power up the LED on the DB3 indicated successful programming. Below is a summary of what I did and did not connect on the Viper 4105V module: -Remote start harness, 5 pin white connector - I have none of these connected, in fact it is not even plugged in. Should any of these wires be connected?    Pin 1) Parking brake input - not connected, I don't think it's needed, car has an automatic transmission    Pin 2) Tachometer input - not connected, doesn't DB3 take care of this?    Pin 3) Brake shutdown input - not connected, not sure what this signal does    Pin 4) Hood pin shut down - not connected, waiting to see if needed, my other CRV has a factory hood open signal    Pin 5) Rear defogger output - not connected, but I would like the rear defogger to go on in the winter -Main harness, 9 pin white connector    Pin 1) factory alarm disarm - not connected, but functioning with Viper remote    Pin 2) factory alarm disarm - not connected, but functioning with Viper remote    Pin 3) Ignition out to alarm - not connected is this needed, I don't have a Viper alarm?    Pin 4) Activation input - not connected, not sure where this would be connected to?    Pin 5) Anti-Grind - not connected, not sure where this would be connected to?    Pin 6) Horn output - not connected I think I need this, horn is not sounding when locking the doors    Pin 7) Trunk release - not connected, I don't have a trunk release    Pin 8) Chassis ground - connected, good connection to chassis    Pin 9) light flash output - connected, P lights flash on lock and unlock, I must have got the light flash polarity jumper in the correct position. -Heavy gauge relay harness, 6 pin white - all pins connected -Door lock harness, white 3 pin - did not use -Satellite harness, white 4 pin - did not use -D2D harness - all pins connected, viper module to DB3 Are any of the wires that I did not connect prohibiting the remote start from functioning? Is there some programming to the 4105V module that I missed. Any help would be much appreciated.jrjr

Here are some answers... First caveat...   I am not a DB3 user and am unable to get any specific info on the capabilities of this module when it is flashed with the Honda4 firmware. The good news is I have used plenty of Viper 4105 units and even had a 2007 CR-V that I installed a basic R/S system into. -Remote start harness, 5 pin white connector - I have none of these connected, in fact it is not even plugged in. Should any of these wires be connected?    Pin 1) Parking brake input - not connected, I don't think it's needed, car has an automatic transmission     This wire is actually called the Neutral Safety and needs to connected to supply a ground for the R/S to work.      You are correct that a vehicle with an Auto Trans you can just connect it to a good Chassis Ground point.    Pin 2) Tachometer input - not connected, doesn't DB3 take care of this?       As mentioned, I don't know the capabilities of the DB3 but most decent similar bypass module ( EVO-ALL and       ADS AL-CA ) do supply a Tach signal in this application.    Pin 3) Brake shutdown input - not connected, not sure what this signal does      This input signal has a few purposes. It is primarily used for "Key-take -over" and as a R/S shutdown.       The similar bypass module mentioned previously do not supply a Brake signal so it's very possible that you will have to hardwire this signal, info below :       Brake Detection    LIGHT GREEN    (+) AT SWITCH ABOVE BRAKE PEDAL       You can test this by doing a R/S and then depress the Brake pedal - engine should shutdown.    Pin 4) Hood pin shut down - not connected, waiting to see if needed, my other CRV has a factory hood open signal       The DB3 might supply this signal. Easy to test, just R/S engine and pop hood.   This is an important safety        feature. Install the 4105 kit supplied Hood Pin if necessary.    Pin 5) Rear defogger output - not connected, but I would like the rear defogger to go on in the winter         Another wire with a couple of uses.         You will have to program the Viper Menu 2, Feature 8 to Option 2        Rear Defrost    BROWN    (-) LINK CONN. ABOVE GAS PEDAL -Main harness, 9 pin white connector    Pin 1) factory alarm disarm - not connected, but functioning with Viper remote    Pin 2) factory alarm disarm - not connected, but functioning with Viper remote    Pin 3) Ignition out to alarm - not connected is this needed, I don't have a Viper alarm?    Not needed.    Pin 4) Activation input - not connected, not sure where this would be connected to?     Not needed. Could be used for test purposes.    Pin 5) Anti-Grind - not connected, not sure where this would be connected to?     If you added a relay on the vehicles' Starter wire, you could use this signal to prevent the driver from engaging the starter during key take over.    Pin 6) Horn output - not connected I think I need this, horn is not sounding when locking the doors     Optional but nice to have. Here is the vehicle info :     Horn Honk    ORANGE    (-) IGNITION SWITCH HARNESS     Viper programming   Menu 1 Feature 1 Option 2    Pin 7) Trunk release - not connected, I don't have a trunk release    Pin 8) Chassis ground - connected, good connection to chassis    Pin 9) light flash output - connected, P lights flash on lock and unlock, I must have got the light flash polarity jumper in the correct position. -Heavy gauge relay harness, 6 pin white - all pins connected Heavy gauge 6 Pin 1 RED (+) (30A) HIGH CURRENT 12V INPUT        White 2 PINK/WHITE (+) PROGRAMMABLE OUTPUT      Optional - Red set to ACC2 Menu 2 Feature 2 Opt 2 3 RED (+) (30A) HIGH CURRENT 12 INPUT           White 4 ORANGE (+) (30 AMP) OUTPUT TO ACCESSORY             Orange 5 PURPLE (+) (30 AMP) OUTPUT TO STARTER    Yellow 6 PINK (+) (30 AMP) OUTPUT TO IGNITION CIRCUIT            Blue -Door lock harness, white 3 pin - did not use -Satellite harness, white 4 pin - did not use -D2D harness - all pins connected, viper module to DB3 Are any of the wires that I did not connect prohibiting the remote start from functioning? Yes. Neutral Safety to Chassis Ground. Is there some programming to the 4105V module that I missed. I don't like Virtual Tach. Assuming the DB3 supplies a Tach Signal... Set Viper to Tach Mode ( Menu 2 Feature 1 Option 4 ) and do a Tach Learn. Good luck. CheersSoldering is fun!