Multiple Add-A-Curcuits

O.k., so I've been thinking about relaying certain products to function more with my car. I was going to "tap" into different relays via my fuse box inside my car to have certain things function when I wanted to. Basically, heres my ideas

I'm going to tap into my car's stock relays via the fuse box, using a few of these



Of course adding them to different relays as to not overload one

My setup was going to go as follows


GPS w/ gauges
Police Scanner (9500ci) w/ PRND321 (Transmission display)
Inside Neon w/ Radio
Outside Neon w/ Radio

I was going to ask if there is anything that may go wrong, as in if i should heighten the gauge of the wire leading from the relays to their respective fuse position (to avoid overloading it)


Thanks for you inputs in advance

None of those items strike me as particularly high-current-draw accessories; you should be fine as long as you don't pile them all on one circuit (as you've already said) . The thickness of the wire between the fuse box and the relay doesn't need to be especially beefy . Just the same thickness as is running from the relay to the accessory should be adequate . I see nothing wrong with your theory here .

Remember to post pics !

If you are going to be doing all of that then really you should do the minimal amount of work to add your own fuse box to your car. Its elementary and will keep your stock box cleaner.

yeah but i can't do that and keep the relay

if i did a fuse box itd be a constant power, not exactly using the relay

unless your know a better way?

I dont' understand why you dont' just use one add a circuit and use a relay for everything. It is a waste of money, and using a relay is just smarter.

kk what setup would you recommend with that then, im just now getting into learning relays

any ideas accepted

It seems as all the equipment you want to run all you basically want when the car turns on.

So just run one add a circuit and a relay.

Basically as the car turns on it turns on teh relay which in turn sends power to all your stuff.

Do a quick google or search on here for how to wire up a relay. They are very simple.

yeah, thats the part i wanted you to do ha jk

i've been searching for a diagram on how the radio relay is set up

i was going to mock that one for my project in the beginning, but couldn't find any help so i made this plan

although, its still a while before i get all the parts so im open for changes

You can find a relay wiring set up on google in seconds. Even on here it would only take you mins. You learn more when you do it yourself rook.

oh no, everything i've learned is from DIY and of course forums helped alot

i'll look again, but as i said before i couldn't find anything

kk i looked and i believe i can do it as this

use a 12volt 30A relay for the install

87 to a constant source
86 to ground
30 to my music interface (Streeglows optx)


although 85 is tricky

You have the pins mixed up

http://www.teamrocs.com/technical/pages/relay_basics.htm

maybe im just stupid right now or something but could i just have this last thing explained and it'll all click

once i connect the 85 and 86 pins to my 12volt car battery and ground it, won't what ever accessory im trying to switch always be on?

what im asking for in this thread is how to wire a relay so it turns on and off just like my radio does

my radio will come on when the car is on AND when the key is in the "ACC" position for accesories. also turning off when the car is out of the ignition

i just want to wire a relay to function in that way so if somebody could bare with me just a little longer until this clicks

First lets start with the basics. What is a relay? A relay is basically an electrical switch that is used to send power that is usually of a higher degree from a little simple switch. So say you wanna hook up fog lights which require alot of power. Most little switches can't handle that kind of current. So you run a relay. As when you hit the switch it then kicks on teh relay. The relay then draws power straight from the battery and sends it to your fog lights. So instead of the power going through the switch. It comes straight from the battery. All the switch does is tells the relay to let the power from the battery go to your fogs. Thus, successfully completing the circuit.

Start from the top. 85s says it is for the controlling switch wire. This is the wire that actually turns the relay on to draw power from the battery. Which, for your case, is when your car turns on right? Ok, so you are going to want to run a wire using a add a circuit thing from one of the fuse locations that turns off when the car does(the radio one is usually the one I use). This way when the car turns off, the relay does as well.

87B(Power lead). This is the wire that comes straight from your battery. Be sure to fuse this wire! Better to be safe than sorry ;)

85(ground). Simple enough. Just the relay ground. Simply take a wire coming from this post and bolt it to a metal piece in the car. I hope you know what a ground is

30H(To lights). This is the wire that will go to all your accessories. GPS, radar, etc. What ever you need.


Give that a read over. It should make it easy to understand. If you still need help. Just ask.

kk this is excellent, this is all clicking now man. now just to back myself up lemme ask this

could i? if i wanted to? simply to the 30 terminal and slice into the ignition cable of my car and have the same desired effect?




although right now i believe i'll do this, simply take a relay as korn has suggested and run it as so

Relay ---> Fuse Block -----> Accesories

You could run it with your ignition wire as well. But imo it would be safe for a novice like you to just use the add a fuse. And the ignitinon wire is a pretty major wire. You short it out, ya big mess.

true true

the relay seems so simple but its just that im making it too complicated ya know?

mucho gracias for the help though

Well what ya still caught up on. I'll gladly try and help. Learning how to use a relay is something that is very useful and isn't complicated at all once you understand it.

hmm need more people like you on SG, jk

well just how exactly is the relay triggered strikes me off

i mean i understand how it take a small flow of electricity to basically switch it

but how exactly, i mean if you can explain that in the most blunt and specific way im sure i'll prob caught on

and btw, whats your next rank. post ***** is pretty much as bad/good as it seems it would get haha

the best way i can think of it now is like this

I think its like 2 kids just waiting to beat the **** outta each other (pins 85 and 86)

and like somebody throwing a small punch at one of the fighters, then once that small punch (or small current change) occurs fighting just erupts and the big stuff happens (when 85 and 86) take over and let the big current come through

You can trigger it with basically anything. For your little proget here what is triggering it is going to be turning your car on.


I will do a little run though. You start your car. By starting your car, your car sends power to your radio and the radio turns on correct? Here is where the add a fuse comes in. As you put the add a fuse into the radio slot. So when the car is turned on it not only turns on the radio but it also lets power flow through the add a fuse and through the wire that comes off of it. That power goes through that wire which is connected to the relay. This power then triggers the relay. Now this relay has a wire going straight from the battery and one going to your gps. When the relay triggers it pulls the power from the battery and sends it to your gps.


Think of it like this. You know a regular switch right. When you flick the switch to the on position it lets power pass through it to go to your accessory. A relay is the exact same thing. Accept electricity flicks the switch instead of your finger. And instead of using the power that triggers the relay, it pulls all the power directly from the battery.


That should clear things up. If not just let me know and I will try finding another way to explain it.

so my little analogy fits right?

In a strange, disturbing way. I guess so lol.

Got it or still unclear on something? If you are still unclear I will ask others to come in adn try explaining it a different way cuz that is the only way I can think of saying it haha

hmm well basically without the analogy lemme quickly explain it TO YOU and tell me if something seems sketchy


The basic way a relay works is it works to have 2 separate circuits, one you to accessory (whatever it may be fuel pump, radio etc), and the other directly to your battery constant, and make them work as one circuit

When you activate the switch, fulcrum 30, with a little current it attracts the pole to complete both circuits, allowing the battery power to directly power your accessory




*SPST

Bingo.

bingo like no shizz, woooo

corvettecrazy wrote:

If you are going to be doing all of that then really you should do the minimal amount of work to add your own fuse box to your car. Its elementary and will keep your stock box cleaner.

This is the only way to add aftermarket stuff IMO, an add a fuse and relay = ghetto

A relay will amplify the voltage ran through it as well.

kk, when i get all the stuff i'll try it out

alright then, i did it all today, had to do alot of re-wiring and all that, but now i've got the set up,,


pics up soon so ya gotta tell me what ya think