1998 vw passat wagon, viper 5901

Your tach colour correct, A/Vox agrees with you on door trigger, Directwire gives a different colour ??? If it works don't worry! No info on rear defog by either, tell me when you're ready and I'll tell you how, simply you will relay interrupt the rear defog "hot when switched on" wire using a timed aux output.

Yeah someone on another forum was telling me about it, said the white wire? I'm not sure if it's white, but anyways do I relay it to ground or 12v? You said hot wire so I'm guessing 12v. He said the trigger has to be latched? Not exactly sure what that means.

Remote start works perfectly as well! So I may try and get the defogger working today as well since it seems I may have more time today then I thought. My windows roll up or down if I hold lock or unlock to ground, is there anyway to use this to make an AUX roll up/down function without buying the window module?

Definitely a white wire originating at the rear defogger switch. Wire as follows using a relay:- Aux output timed (that's what latching means) for say 10 minutes to 85, 12volt + constant fused at 30amps to 86 and 87, Cut the white wire, switch side to 87a and window side to 30. OR Just leave the switch on the night before. The windows, just programme your unit for comfort close. To lower the windows you will be unlocking the vehicle so that's a no-no! The alternative is to use another aux, leave on default (i.e. hold button for 1.5 seconds before it starts), release button at your vent position, join to lock wire.

Well I'm not sure leaving the switch in would work because it's not a traditional switch, it's just a push button, at least that's what it seems like.

Turn on the ignition, turn on the defogger switch, turn off the ignition and remove the key, replace key and turn on the ignition, see if it's still illuminated, that's your answer. If so you don't need to wire up the rear defogger especially.

Doesn't look like it stays on. I was going to use the defogger output from the alarm brain. My relay doesn't have an 87 and 87a. Theres, 30, 86, 87 and 85. So would Power go to 87 and 30, then... Actually you have like 5 connections there, this relay has 4 connections? Do I need a different relay?

No wire as before, simply connect the white to30. Always buy 5 pins, they give you more choice, also, the first method prevents any feedback if that defogger is processor controlled, it's inherently a safer method.

I may have a 5 pin relay around somewhere. Will have to take a look. I removed a 30amp relay from my daytime running light circuit, believe it's 5 pin so I could probably use that.

It will most likely do no damage, I'm just playing safe by sending NOTHING back to the processor. A 4 wire acts as a switch, a 5 wire as as a CHANGEOVER switch, hence when inert, 30 and 87a are joined as normal, when activated, they are disconnected and 87 is joined to 30.