avital 5303 in a 07 suzuki forenza

H4/2 BROWN 200mA (-) HORN OUTPUT black -(horn switch) would i just tap into the horn wire or use a relay since it has only a 200ma output

Yes, just a direct tap-in, no relay needed for the horn.Soldering is fun!

The dome light supervision wire is an option to have the alarm system control the dome light. The Door trigger is the wire that tells the alarm system when a door is opened.If i Can't Install it    I Don't need it   Joe

H1/10 WHITE/ BLUE REMOTE START (-) ACTIVATION INPUT not sure H1/12 ORANGE (-) 500mA GROUND WHEN ARMED OUTPUT not used H2/1 LIGHT BLUE 200mA (-) 2nd UNLOCK OUTPUT not used H2/2 WHITE/ BLACK 200mA PROGRAMMABLE (-) AUX 2 OUTPUT not used H2/3 VIOLET/BLACK (-) 200mA PROGRAMMABLE (-) AUX 1 OUTPUT not used H3/5 BLUE/WHITE (-) STATUS OUTPUT not used H4/1 ORANGE / BLACK 200 mA PROGRAMMABLE (-) AUX 3 OUTPUT not used do i use the h3/5 or h1/10

what would the dome light supervision wire function be if what sets my dome light off is the door trigger. my dome light comes on when i open the doors of my car already

when i do the relay for H1/1        use relay RED / WHITE (-) 200mA TRUNK RELEASE OUTPUT brown (driver kick pannel) what size fuse should be on the constant +12 volt

I would put a 10amp in there. you could always measure the current draw and fuse it accordingly.If i Can't Install it    I Don't need it   Joe

Do I use h3/5    or h 1/10

H1/10 is used to activate the remote start from an external source - isn't needed for a basic install H3/5 has variety of uses but for a basic system you don't need itIf i Can't Install it    I Don't need it   Joe

i changed my mind and went with the Excalibur al 1850 edpb. sorry about all the trouble the horn has a built in relay Violet/Black Wire - Horn Relay N/O (+/-) Input not sure Blue/Black Wire - Horn Relay COM Output not sure BROWN / Black Wire - Horn Relay N/C Input not sure wasnt sure how to wire it up. White Wire - Alarm Arm (-) Input not sure Brown Wire - Alarm Disarm (-) Input not sure these two are if i want a specific device to arm or disarm my car correct?