1997 Audi A4 2.8L, rs, alarm, keyless

I just purchased this vehicle and would like to install either a alarm/remote start system or just a remote start/keylessentry. My questions are, does this vehicle have a factory alarm? The previous owner gave me a remote but it doesn't work. Factory remotes could end up costing me just as much as a alarm system. I have installed plenty of alarms in Hondas but I am a little worried about this vehicle. what will I need other than the alarm for this install? vehicle diagram would also be great? Thanks

maybe just a keyless entry unit, roll down window lock door wait a little bit open door form inside see if horn/siren goes off if nothing then u have keyless enty, y it dont work mybe fuse is blown or unit dotn work, or even maybe it dotn even go to that car, he just got in conufused with soemthign eles.

here is aguide for your car. |       ITEM      |     WIRE COLOR     |POL|       WIRE LOCATION        | |              12V|red                 |+ |ignition harness            | |          STARTER|RED / black           |+ |ignition harness            | |   SECOND STARTER|blue               |+ |ignition harness            | |        IGNITION|black               |+ |ignition harness            | |        ACCESSORY|yellow/black        |+ |ignition harness            | |       POWER LOCK|RED / brown           |- |drivers kick or alarm *1    | |     POWER UNLOCK|gray/white *5       |- |drivers kick or alarm *1    | | PARKING LIGHTS +|gry/blk & gry/red   |   |headlight switch            | |       HEADLIGHTS|yellow or yel/red   |+ |headlight switch            | |     DOOR TRIGGER|brn/yel & brn/wht   |- |*4                          | | DOME SUPERVISION|use door trigger    |   |                            | | TRUNK/HATCH PIN|WHITE/ black        |- |alarm module *1             | |        HOOD PIN|BROWN / red           |- |at hood pin switch          | | FCTRY ALARM ARM|arms with lock      |   |                            | |FCTRY ALRM DISARM|disarms with unlock |   |                            | |       TACHOMETER|GREEN/ blue          |   |instrument cluster or *2    | |      SPEED SENSE|WHITE/ blue          |   |instrument cluster or *3    | |       BRAKE WIRE|RED / black           |+ |at switch                   | |     HORN TRIGGER|BLACK / YELLOW        |+ |horn relay                  | |           WIPERS|blk/gry(L),grn/yel(H|+ |steering column             | | LF WINDOW UP/DN|not recommended     |   |                            | | RF WINDOW UP/DN|not recommended     |   |                            | | LR WINDOW UP/DN|not recommended     |   |                            | | RR WINDOW UP/DN|not recommended     |   |                            | Notes: *1 Factory alarm is on the bottom passenger side of the trunk.   *2 Tach is also found at the ECM on the driver side firewall. *3 VSS is also found at the cruise control module behind the glove box. *4 BROWN / yellow in the drivers kick panel gets the drivers door, BROWN / white in the passenger kick panel gets all the other doors. Use both wires and must diode isolate from each other. *5 Unlock requires double pulse.

if there is no factory alarm, I should be OK doing it myself. But if there is a factory alarm and I want to do remote starter, what else will I need?

looks liek ther isa factory alarm but is arms and disarms on lock and unlock so you be good to go. most remote startes can disarm the alarm b4 remote starting.