I have a 94 cadillac deville 4.9. I have the HornBlasters Shocker Classic 228VX . I have the compressor hook to a 20 amp toggle switch, then hock to the battery with a 25amp inline fuse. I wanna hook it to a ignition hot wire… The only one i can find is a pink 4ga ignition wire in the steering column… This car has to many danm computers on it… If i do a vair 40amp relay and tap in to the pink ignition wire, Will that be ok?
Second the vair 40amp relay has 4 posts on it. How do you hook it up? I never done one before…
Do you have a cigarette lighter in the car that only works when the ignition is on?
The pins on the relay should have numbers on them? normally 30, 85, 86, 87?
85 = + positive from ignition feed or cigarette lighter
86 = - ground
30 & 87 are your switch wires.
30 = + from a fused feed from battery
87 = Goes to feed your Horn setup.
The compressor will now only run when the key is in the ignition.
I do have a cigarette lighter… In my car… Is that 12 volts? and What about the pink ignition wire i found under the steering column?
On the relay the numbers are 85,86,87,30
Sorry, matey I am not familar with the colour coding. You would need to test to see if this Pink wire is 12v when the key is in the ignition using a 12v tester. (get a small pin and carefully push it into the pink wire and then put the tester on the pin to test to see if there is 12v’s when the ignition is on.)
Yes the cigarette lighter will be 12v but you need to check it does not work with the ignition off.
Simply wire the relay as I said above and it’ll work just fine:D
Ok thank you I go check it out right now…
The cigarette lighter will not work. I plug my gps in it and it stays on with no key in the column… The pink ignition wire is 12volt… As long as I have the relay hook up to it will it be ok that take some stress off wire. Just my car has 5 computers in it and I dont wanna mess anything up…
Yes this will be just fine.
:DThe relay draws hardly any current whatsoever. If I were doing it I would probably strip a tiny piece of insulation off the pink wire rather than cutting it and solder a wire onto it and then insualte it again using insulation tape.
Also, I would consider coming off the pink wire to a inline 5 amp fuse first & then to terminal 85 on the relay. This then means if your relay ever went wrong & it fried itself, at least it will blow the fuse first rather than your wiring loom in the car!:eek:
(I gotta go to work now, I hope I’ve helped in some way to make it a little clearer?)
ok thank you. I understand that 85 go to the pink ignition wire,86 goes to ground,but where would 87 and 30 go or would i even use those 2?
you have to put the relay in line with the existing wiring that you have for your Horns.
eg; You had a wire from the battery to your 228vx set up with a toggle switch? you need to cut the wire after the toggle switch. then you connect the cut wire from the toggle to terminal 30 and the other cut wire goes to terminal 87 (to your Horns set up)
So far I got 85 goes to the pink ignition 12 volt wire,86 would go to a ground,87 would go to the wire from the pressure switch… I am not using the toggle switch I am taking it out. So where would 30 go to?
If you keep the toggle switch in then you are able to turn off the compressor for those times when the police officer is standing at your window and your trying to deny ever having had horns lol.
If you are taking out the toggle switch, simply connect the wire you have going direct to your battery from the toggle switch & connect it to terminal 30
So,
85 goes to the pink ignition 12 volt wire,
86 would go to a ground,
87 would go to the wire from the pressure switch.
30 Fused feed from battery
ok thank u for your help… on 30 that alot of wire to run almost 15 feet does it need to go to the battery or what eles could it go to?
This is basically what you’re trying to do right here:
http://viaircorp.com/Schematics/singlec_wd.pdf
85 & 86 can be wimpy wire.
87 & 30 should be 10ga wire.
Thank you very much… That right there answers my question…
Be mindful that some GPS units have their own internal batteries, so they’ll keep working even if the ignition is off and they’re not receiving power from the cigarette lighter.