so my buddy has a viper 791 in his integra (pretty sure its a 1995). now he wants to hook up the A/C to the remote start (so that the a/c starts with the remote start). i installed the alarm for him so he asked me for help. here is what i did and where i need help:

orange acc. wire from remote start relay box to the blue wire on the a/c plug in the dash behind the radio. whenever we remote started the car and turned the a/c on it would blow a 30amp fuse in one of the red wires that powers the remote start relay box.

so thinking that the a/c might be drawing too much power i decided to go the relay route: orange acc. wire to 85, ground on 86, output when open to the blue wire on the plug, and power pulling from the battery. ofcourse the hot wire from the battery is fused.

so with the relay installed we attempted it again, and again, it blew the 30amp fuse that was in between the battery and relay.

what am i doing wrong? i have not had the time to go out and get new wire yet so right now i have the relay hooked up with 14guage wire. is that too thin or cna it carry the load for the a/c? and the blue wire on the a/c plug, is that even the right wire?

oh one thing i forgot: with the relay, i can remote start the car, and i can turn the a/c to 1, 2, and 3 without the fuse from the battery to the relay blowing. it only blows when i turn the a/c to 4. the a/c does not work in 1,2 or 3 before it blows the fuse though. the lights dont even turn on.

please help. advise is welcome, or a wiring diagram would also help.

thanks
Carlos

p.s. sry for the lengthy post

 

What DEI intends for you to do is leave the AC on when you turn off the vehicle. Then, the next morning when you remote start the car, the AC is blowing. If you want to be able to turn on the AC seperately, you should use a relay controlled by one of the extra channel outputs on the alarm. You will then be able to start the AC by hitting combination of two buttons on the remote. I could figure out what wires to connect to the relay, but I'm sure fcm and others have experience in actually doing it, so I will leave it to them to outline that to you if that's what you want to do.

The Accessory and Ignition 2 etc outputs from the relay module should all be connected to their respective Accessory wires at the ignition harness. Otherwise, no accessories in the vehicle will work when remote started until you put the key in.

 

thanks for the info suspendedhatch. now the accy and ign 2 wires that u are talking about, where do i connect those to? right now as it hooked up, the ign 2 and accy 1 and accy 2 wires are not hooked up, i dont have a wiring diagram in front of me so i am not 100% sure if there are any other ones not hooked up. I know that the 3 power wires, keyside and starter side and ign wire are hooked up. where do i connect those wires to. i want it to just turn on the a/c when i start the car (ofcourse leaving the a/c on when i leave the car)

thanks in advanced

 

Ditto what suspendedHatch said, all you need to do is leave the A/C on when you turn off the car, it is by far the easiest way.

In a 94-97 Integra the A/C button/latching switch on the control head supplies a ground to the "A/C Thermostat", [blue/green lead] to turn on the A/C system.

The A/C switch gets that ground from the "Blower Motor" speed control switch, [green lead] blower motor speed switch must be set to at least 1.

Speed 1, 2, and 3 outputs from the blower motor speed switch go to the "Blower Resister" pack, then to the blower motor, [ground] speed 4, [blue/black] goes directly to the blower motor, [ground]

Connecting 12V+ to any of these leads is a short, and will blow fuses.

If you want to be able to turn on the A/C, without leaving the A/C switch on, you mus supply a ground to the blue/red lead coming from the A/C button/latching switch and to the blue/black lead coming from the blower speed switch, they have to be isolated from each other, so you will need a DPST relay., a DPDT relay will also work, even a SPST or SPDT relay and 2 diodes will work, the best would be a 12V 4PDT and a SPDT relay, 2 poles on the 4 pole will supply the ground and isolate the two ground circuits, one or both of the others will be used to latch the relay, the SPDT will be used to de-latch the 4pole relay when you step on the brake. 94

BTW, it is a lot easier to wire the relays then it looks, feel free to IM me if you have questions, sorry I can not supply a diagram, [OASC].


Modified by fcm at 2:39 PM 8/24/2007

 

ill do what i can to help you out..

all of the main wires can be found in the ignition harness of the vehicle.
white = 12v tap the red wire from the 791 to this..
black/white = starter wire. cut wire hook purple wire from 791 to starter side
hook green wire from 791 to key side ( this is for the starter kill)
black yellow = ignition tap pink wire to this
yellow = accessory tap your orange wire to this.
white/blk = second accessory ( you dont need it, but if you want you can tap the pink/white to this)

also for remote start to work, be sure to ground the thin black/white wire that wire is the parkinng brake wire. if the alarm dosent see a ground from this wire it will not remote start..

 

fcm, thanks for the info. just a few things, i dont really get it lol, is there any way u can tell me what color wire from the viper unit i need to hook up to what wire on the a/c unit or a relay.

i dont mind leaving the a/c on when i leave the vehicle, it kinda defeats the purpose to remote start the car and then go out to it to turn the a/c on.

sorry if i seem kinda stupid, just didnt really understand fcm's post.

 

If you don't mind leaving the A/C on, then you do not need to understand, in the summer you leave the A/C on, in the winter you leave the heat/defrost on, [if you live in a place that gets cold in the winter].

If on the other hand you want to be able to turn it on even if you left it off, you will need to install a latching relay, triggered by one of the Vipers EXT outputs

The Vipers ch 4 output is programmable to "latched output" press the ch 4 button, it's on. [200mA ground] press button again to turn it off, it could be used to turn a 4PDT relay on and off, the relay will supply the grounds to the blower motor, [blue/black, off "Heater Fan Switch] ] and the A/C thermostat, [blue/red, off "A/C Switch"] and the "Recirculation Control Motor", [green/red. from fresh air/recirculation switch, the 4th pole of relay will be used to open the circuit the "Recirculation Control Motors" fresh air control line, [green/white, from fresh air/recirculation switch] all the above leads are coming from "Heater Control Panel".
You would also need to leave the vents on for most efficient A/C

You would have to press the button on the remote to the turn it off when you got to the car, or all you would have is full blast A/C.

The above is the simplest way I can think of doing it, other then to just leave the A/C on. 94

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fcm &raquo;</TD></TR><TR><TD CLASS="quote">You would have to press the button on the remote to the turn it off when you got to the car, or all you would have is full blast A/C.</TD></TR></TABLE>

Naw... fcm's going to explain how to use the "remote start status output" to take care of that for you. As soon as you put the key in the ignition, it will automatically shut it down.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by suspendedHatch &raquo;</TD></TR><TR><TD CLASS="quote">

Naw... fcm's going to explain how to use the "remote start status output" to take care of that for you. As soon as you put the key in the ignition, it will automatically shut it down.</TD></TR></TABLE>Naw. your going to have to do that, I thought about the latched on and delatch when ch 4 is pressed again or ign. turned on and off, [3rd option for ch 4] however, in remote start mode ign. is already on.

I know you could use status on #85 and ign. on #86 and it would automatically come on when remote start is used, and automatically turn off once you step on the brake to cancel remote start mode, however A/C would always come on with remote start.

I can't see any way to do it with just one relay.

I think the easiest way would be a latching relay, momentary pulse off EXT to latch, and delatch when brake stepped on. 94

 

ok, i just want to wire it up so that i will leave the a/c on when i leave the car. what wire do i have to hook up to what wire to get that working? and will i need to use a relay or not?

again, sorry if i seem stupid lol

thanks, carlos

 

You should not have to connect anything up, [more then the connections for remote start] if the A/C is left on when you turn off the ign. it should come on when you start the car, with key or remote start. 94

 

ok, it does not do that at the moment, but right now, that ign 2 wire is not hooked up, nor any of the accy wires, do those need to be hooked up for it to work, at the moment, when i remote start the car, it does not turn the radio or a/c on, do i have to hook up maybe the ign 2 wire for those to work? and if so, where do i connect these to?

 

Yes. The accessory wires from the remote start relay have to be wired to the cars accessory wire so that the a/c, radio,etc. turn on when the car is remote started.

 

Ditto the above^^^^

Does the A/C come on, [if left on] if you start the car with the key? 94

BTW, 94-up Integras do not have 2nd ign., you do not need that output., the acc., [yellow] must be connected.

 

yes the a/c comes on when i start the car with the key. i dont think i have the yellow acc wire hooked up, ill double check. in response to 94_DC4's response, to what wires do i have to hooke the acc wires for the a/c to go on when i remote start the car? thats where i am running into the problem, i realize that the wire needs to be hooked up, i am just not 100% sure where

thanks
Carlos

 

Connect the acc. wire from the remote start relay pack to the acc. wire at the ignition harness.

 

oh ok, the one that has 12v when i turn the key to the acc position? i should of thought of that lol

 

You are correct.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by suspendedHatch &raquo;</TD></TR><TR><TD CLASS="quote">The Accessory and Ignition 2 etc outputs from the relay module should all be connected to their respective Accessory wires at the ignition harness. Otherwise, no accessories in the vehicle will work when remote started until you put the key in.</TD></TR></TABLE>

I answered that in your first reply. So I guess you're not reading the replies...

 

suspendedhatch: i am reading the replies, i was just kinda confused on where to wire it up to. sorry if i gave the impression that i was not readint it