2000 taurus wagon / viper 571
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=118680
Printed Date: April 27, 2024 at 9:34 PM
Topic: 2000 taurus wagon / viper 571
Posted By: smokeman1
Subject: 2000 taurus wagon / viper 571
Date Posted: December 20, 2009 at 12:02 PM
Hi All, I have a Viper installed in my 2000 Ford Taurus Wagon and would like to get the rear window defrost connected to the Viper 571 Remote Start. I have the install manual and understant the it is the "Blue/White (-) 200mA 2nd status/defogger" wire that gets connected to???? I have look at the wiring diagram and it shows what looks like a switch(button) that powers the defroster, to a Light Emitting Diode, to a 1.2k Resistor, to a 10A Fuse, to a Rear Window Defrost Relay, (87 terminal), in a Central Junction Box under drivers side dash. 86, 85, and 30 terminals are on this relay. My question is: Can I connect the Blue/White (-) 200mA 2nd status/defogger to the wire behind the defrost switch after the 1.2 k Resistor, and then the Rear Window Defroster Relay would feed the defrost circuit?? Thanks for all who look at this question. Rich
Replies:
Posted By: t&t tech
Date Posted: December 20, 2009 at 5:41 PM
If the wire you're thinking about connecting it to goes to terminal 87 on the defroster relay then you won't be able to connect the defogger wire of the 571xv there! You may have to use a relay and five wire it!
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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: smokeman1
Date Posted: December 20, 2009 at 6:56 PM
Hey T&t Tech, Thanks for the replay. Any guideance as to what wire to connect to with a relay or ??? Thanks Rich
Posted By: smokeman1
Date Posted: December 20, 2009 at 7:01 PM
hey again, Is ther a way, or should I just be sending 12 volts to the defrost grid with a relay, bypassing the entire cars relays, switches, and other componants?? Rich
Posted By: t&t tech
Date Posted: December 20, 2009 at 8:11 PM
first you have to determine the polarity of the signal that is being sent, when the defroster button is activated! Ascertain this, and post back when you do!
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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF.
PSALMS 37:5
Posted By: tedmond
Date Posted: December 20, 2009 at 9:11 PM
as t&t said, find the polarity of the defrost wire first. Now you can get this directly at the switch if its acessable, or go to the defroster wires at the back. some cars vary. it may be a neg trigger to activate factory relay, but 12v + is sent to the defrost, so test carefully.
Posted By: Chris Luongo
Date Posted: December 20, 2009 at 11:57 PM
My ex has a 2000 Taurus sedan, and I'm almost sure that hooking up her rear defroster was an easy one-wire hookup with no relay.
If you turn the defroster on and off at the switch, you should hear a clicking sound inside the driver's fuse box.
Does that diagram you have show a wire color coming from the switch? That's the wire you want.
There should be a low-current negative wire from the switch to the fuse box, and then a high-current positive wire going fromt he fuse box to the back of the car.
If you get it as a negative, you won't need a relay, and your installation will be neater and easier.
Just find (and of course, test) that wire that goes into the fusebox, that's coming from the switch---I think it makes a momentary negative pulse every time you push the button on the dash.
P.S. Is your remote start already done? Did you power up the BLACK/ green second-accessory wire? Or, in other words, do your radio and wipers work during remote start?
That BLACK/ green powers up not only the wipers and radio, but enables the low-current negative wire for the defroster too...........if you don't power up the BLACK/ green at the steering column, the defroster won't work during remote start.
Posted By: smokeman1
Date Posted: December 21, 2009 at 1:20 PM
All Right!...Here is what I have found: 1 The input to the defrost switch is BD/OG and has 11.5 positive volt in. Ignition off. 2. The output from the defrost switch is DG/VT and also has 11.2 positive volts at it. Ignition on and defrost button pressed to ON. NO VOLTAGE AT THIS WIRE WHEN THE IGNITION IS OFF. 3. Both of these wires come in/out of a "Intergrated Control Panel" which is where the CD player, and all climate controls are. This is connector C2009 in my taurus wiring diagram book. It also has all of the audio wiring,( Power, Speaker, audio system on, volatge .....) When I press the defrost button on and off I hear a clicking at the "Central Junction Box", and that is where a SPDT relay is for the Rear Window Defrost. There is constant voltage on pin 30 with ignition on or off. The is voltage on pin 85 when the ignition is on. I did find a BN/LB wire under the drivers side sill cover that has 0 voltage when off, .02 volts positive when on remote start, (defrost button off), and 14.5 volts positive when on remote start with the defrost button turned on. ( Had to press it to ON in the remote start mode). 4. In the remote start mode my radio works, heater fan works, power windows work, wipers work, parking lights come on, dash lights come on, and the rear window defrost will come on ONLY if you press the button. I had this Viper installed by an authorized dealer about 18 months ago. So, with all of the above info, can i simply connect a 12 volt source to the BN/LB wire under the drivers sill cover using a relay in conjuction with the Blue/White (-) 200mA 2nd status/defogger ?? Or should I be looking at something else or other wires or???........... Thanks again, Rich
Posted By: chev104275
Date Posted: December 21, 2009 at 5:28 PM
there should be a blue/orange wire pin 17 negitive pulse behind the climate control head thats your switch wire i belive its a pulsed trigger but test first
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If i Can't Install it I Don't need it Joe
Posted By: chriswallace187
Date Posted: December 22, 2009 at 6:17 AM
It seems that the DG/VT(I'm assuming that's dark GREEN/ violet?) is the wire you want - is it testing as 12V at rest with the ignition on, and 0V with the defroster button held in? Or 0V at rest with ignition on and it goes to 12V when the button is held? I've usually found that defroster buttons send a ground pulse, but it's quite possible that your car is different.
If it's the first case, you'll need a relay to change the polarity of the defroster output. In the second case you can connect the wire directly, program it for "pulsed" and it should work.
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C Renner's Auto Electronix
My service is cheap, quick, and good - pick any two
Posted By: smokeman1
Date Posted: December 22, 2009 at 5:10 PM
Yes the DG/VT does stand for dark GREEN/ violet. I checked once again, this is the output from the defroster switch. It shows 11.5 volts with defrost button on and drops to 0 volts when the defrost button is pressed again. Does this mean I can apply a 12 volt source to this wire with a relay, activated by the remote starter?? I don't mean to sound stupid about all of this, but I am a very new to doing this type of project and want to move slowly and carefully. Thanks Rich
Posted By: cmk0808ny
Date Posted: December 22, 2009 at 6:07 PM
i have an 01 taurus and it was a blue/ orange wire at the radio harness. the harness plugged into the radio not by the switch. it was a neg pulse not latched. another cool thing you could do is take the aux (not trunk release) of the r/s and hook it to the headlights. I believe it is RED / yellow negative at the headlight switch and hook that wire directly to it and you can light up the front of the car when walking towards it at night.
Posted By: smokeman1
Date Posted: December 25, 2009 at 1:38 PM
Hi Everyone I have successfully connected the rear defrost to the Viper 571 remote start. chev104275 & cmk0808ny were on track for the infomation using the blue/orange wire going into the defrost switch. Special thanks to cmk0808ny for his paitence with my private messages and guiding me as to testing for negative pulse. Turns out it was a simple one wire connect. Connecting the blue/white status wire of the remote start to the blue/orange wire of the defrost switch. Set the status to pulse and WORK PERFECTLY!!!!!!!! Having a bitwriter is very handy also. Remote starts the car, at 7 seconds the parking lights come on, and at 13 seconds the rear defrost is activated. Thanks again to all Rich
Posted By: smokeman1
Date Posted: January 02, 2010 at 9:26 PM
Now for my next question: I have in this car a directed 556uw bypass module that is tying up a spare key. In all of your(s) experiance, what is the best type/brand of no key required bypass to replace the 556uw with??? Thanks Rich minus 9 degrees out ther tonight!!!!!!
Posted By: tedmond
Date Posted: January 03, 2010 at 12:48 AM
well everyone has their own preferance. a fortin key-override-all would do. simple 5 wire hookup. data rx/tx, ground, constant 12v, and status ------------- Ted
2nd Year Tier 1 Medical School
Still installing as a hobby...pays for groceries
Compustar Expert
Posted By: smokeman1
Date Posted: January 04, 2010 at 5:16 PM
Thanks tedmond, for the override advice. I have ordered one and will give it a try. Looks to be real simple. (famous last words) Rich
Posted By: smokeman1
Date Posted: February 06, 2010 at 7:07 PM
Just an update... Got a Fortin key-overide-sl2, followed the instructions, wasn't sure about the one that said "to ignition", so I verified it was to the ignition at the steering harness...hooked it all up and it worked like a charm... Thanks for guideance and direction as to what and where... Rich
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