Push Button Start How-To

ASSISTANCE Electrical & Entertainment Systems
1

ok here is a quick how-to on custom push button starts

I use a relay that way I dont heat up what ever I use as the Button IE. a/c button, horn button, cruise control button etc etc

The relay I use is a 12v50A relay the not sure the number of it but it has 5 connections on it 30, 85, 86, 87, and 87a

ok well I am just going to do a basic one and not go into real details on how I did mine that way you can use any button

follow the ignition switch wires to the fuse panel below the dash.disconnect the black/white wire coming from the other side of the plug(coming from the starter not the switch side).

Find a place that has a switch power source on the fuse panel I think there is two or three.

now depending on if your switch is going to be supplying a - or + output depends on how you hook up the relay I will try and explain both

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ok the wire you pulled off the plug that goes to the starter(black/white) is going to go to Connection 87 on the relay(if you depinned the black/white wire just heat shrink it and plug it in otherwise you’ll need a female terminal to connect it)

ok now the switched source you found in the fuse panel is going to go to connection 30 on the relay I would use wire that is alteast as thick as the black/white wire. I usually use 8gauge amp wire. ok now if your switch puts out a neg instead of positive your going to wanna hook up a wire from the connection 85 to 30 too this can be a regular wire but if your button is supplying a + source then dont do that.

ok now if your button is supplying a + source your going to run the wire from the button to 85

ok now if your button is a grounded supply your going to run it to 86

ok now to siplify it alil this is how it should be if your button puts out neg
when pressed

30-Switched power supply from fuse panel use atleast 8gauge wire
85-should be connected to 30(switched + power)
86-should be ran to your button(in my case was the horn button)
87-should be the wire that goes to the starter(black/white)
87a

there it should be done I would hide your relay that way its more anti theft and it makes the thief think

ok now how it should be if your button is supplying a + output when pressed

30-same as above
85-goes to your switch
86-run a wire to ground for this
87-same as above
87a-

you can also make it so your seatbelt has to be on etc etc

2

With this process… the key has to still be in acc switch in order for the car to start right?

Nice write up btw… thanks! :rockon:

3

[QUOTE=hybrid90;1930863]With this process… the key has to still be in acc switch in order for the car to start right?

Nice write up btw… thanks! :rockon:[/QUOTE]

yes you still have to use the key without it the relay will get no power unless you wire it to constant and you also need the ignition lock still you know lol

I will do a better write up if I can get this put in the how-to section I think it needs to be there

and thanks man its good to know people apreciate your work

heres a small video

http://www.youtube.com/watch?v=4gMK4wJBEqU

4

let me make sure i understand this right.

30 is the ACC supplied power from the fuse box
85 connects to 30 to share the same power from the box
86 connects to positive side of horn button (negative side goes to ground)
87 is the blk/wht starter wire

sorry for the huge pic but is everything correct here?

5

[QUOTE=boarderwayne;1931035]let me make sure i understand this right.

30 is the ACC supplied power from the fuse box
85 connects to 30 to share the same power from the box
86 connects to positive side of horn button (negative side goes to ground)
87 is the blk/wht starter wire

sorry for the huge pic but is everything correct here?

[/QUOTE]

no when your using the horn button it is only one wire coming from the steering wheel for the horn and its wont show a neg or pos output untill you press the horn and when you press the horn button its neg. for the relay it needs two things to make it switch and thats a + and - and one of those is used for the push button start and in this case its neg which will be only supplied when you press the button

you had the right Idea for the diagram but the horn doesnt have a positive wire going to the button you would blow something if the button connected a + and - together

6

are you using the blu/red wire from the horn button to connect to 86?

I think i just worded it wrong before , i just called the blu/red a positive wire cause i’m half asleep right now.

This is how i meant it:

30 is the ACC supplied power from the fuse box
85 connects to 30 to share the same power from the box
86 connects to blu/red wire from horn button
87 is the blk/wht starter wire

7

I cant really say what color the wire is because I have a 99 gsr steering wheel on my car that has two horn buttons and I used one button still for the horn and one for the start button I actually ended up using on of the wires that was for cruise control for the push button start since I dont have cruise on my car but I will look at my car later and see if I can clarify what color. if you go to the youtube link you will see what I mean about the two buttons

8

yeah im planning on doing it on my civic right now and it has two buttons, one last question and i’ll leave you alone. How did you get to the wires to the horn button, did you have to remove the wheel or did the buttons come out?

9

Call me crazy but I was thinking of wiring the acc constant connected to a hidden switch and connected to an inline starter button… so no key required. is that possible?

I know it sounds crazy cuz if the thief could find the hidden switch then I’m screwed… I was thinking of it in a way like the new cars have it with no key required… :read:

How would you wire that up if it’s possible… just curious… if not, then I’m a retard for thinking about it :crazy:

10

[QUOTE=hybrid90;1931208]Call me crazy but I was thinking of wiring the acc constant connected to a hidden switch and connected to an inline starter button… so no key required. is that possible?

I know it sounds crazy cuz if the thief could find the hidden switch then I’m screwed… I was thinking of it in a way like the new cars have it with no key required… :read:

How would you wire that up if it’s possible… just curious… if not, then I’m a retard for thinking about it :crazy:[/QUOTE]

anything is possible and I wouldnt recomend it at all cuz that makes it so even if they cant find your button or switch they can still push your car down the street freely

and for my car I removed the airbag and used a ohm reader to see what wire in the steering column went to the horn

11

I’m kinda suprised that so few people have commented on this how-to huh oh well

12

it would probably get more attention in teg tips

13

Yo SavageDA - can I get your email addy just in case I have a few questions… I’m planning on doing some type of security thing in the DA soon when I have time… thanks

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simplysavage23@yahoo.com

15

id have to say u did a really good job:rockon:

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thanks I took forever to write the damn thing though I did 30+ of them different ways just never wrote it down lol

17

Very good write up now quick question does anybody know how to disable the button once engine has started? Maybe with the use of a second relay?

18

nice write up!

this should be at teg tips.

would be great if pics were taken for the sake of ilustrating this how to.

19

I get the legist of it, but im confused about one part, do i just splice the red/blue wire or do i cut it? And if i cut it, do i use the plug end or the button end? Will the horn still sound when i go to start my car? How do i do this and retain my horn function?

20

[QUOTE=konan;2056152]Very good write up now quick question does anybody know how to disable the button once engine has started? Maybe with the use of a second relay?[/QUOTE]Yes, install a relay on the horn line, [or any line used] trigger the relay with the output of the CIS, as long as clutch is not stepped on it will work as the horn, [or other] when clutch is stepped on it will work as the starter, I probably would not use the horn button for this as horn would not work if stepping on clutch and engine would crank if you hit the horn and you were stepping on clutch, [ugly sound and damage would result]. 94