Relay for remote start
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=138688
Printed Date: April 27, 2024 at 5:25 PM
Topic: Relay for remote start
Posted By: 1st_handler
Subject: Relay for remote start
Date Posted: March 19, 2015 at 12:34 PM
I am trying to learn how to install a remote car starter
A lot of post talking about relay. Such as the following:
Pin 85 - Ground
Pin 86 - Starter from alarm (violet)
Pin 30 - Starter 2 on car
Pin 87 - +12V constant - Make sure you install a fuse. 20A should be sufficient.
I am new to electronic but like to learn to do things myself.
My question is: Is this relay already in the vehicle? Or do I have to buy a new one and put in the the fuse box or somewhere? and Where do you plug or put this relay to in the car if you do buy one?
Replies:
Posted By: 1st_handler
Date Posted: March 19, 2015 at 12:39 PM
I do a lot of research, found a lot of remote car starters and their diagram hardly show this relay. Does the remote car starter working without this relay?
Posted By: 1st_handler
Date Posted: March 19, 2015 at 12:40 PM
Help please!!!!!!!!!!!clarify please !!!!
Posted By: howie ll
Date Posted: March 19, 2015 at 12:44 PM
Most units have a second low current NEG starter output. Thus:-
85 = low current NEG from RS unit
86 = IGNITION
87 = 20 amp fused constant
30 = output to second starter wire
It's also advisable to place a diode 1N4004 across 85 and 86, band to 86 to prevent back EMF (c. 200 volts) destroying your RS on relay shutdown.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: 1st_handler
Date Posted: March 19, 2015 at 12:52 PM
Thank you for the response.
How does it label?
85 = low current Neg from RS unit. Does it label 85 on the RS unit or on the connectors?
86 = Ignition. Is this just a regular wire?
87 = 20 amp fused constant. Is this just a fuse?
The Doides? Do I need to buy one of this or does it come with the RS. Explain more about the crossing and the band Please.
Posted By: howie ll
Date Posted: March 19, 2015 at 12:53 PM
Look at your unit's instructions but don't worry I'm God I know what you have.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: 1st_handler
Date Posted: March 19, 2015 at 12:59 PM
LOL. Thanks
Posted By: howie ll
Date Posted: March 19, 2015 at 1:05 PM
Actually I've had a bad day, shouldn't have taken it out on you and didn't read your last post properly.
85 is the NEG side of a relay coil and marked thus.
86 Yes whatever you mean by a "!regular" wire.
87??? A thicker wire from a constant source fused at 20 amps.
You need to buy the diodes.
Really helps if you explained what RS and what car.
Having said that; from your questions I strongly advise you to save lots of time and $$$ and go to a pro!
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: 1st_handler
Date Posted: March 19, 2015 at 1:05 PM
looking into install this into a Tacoma 2010. Which of this wire is 85, 86, 87, and 30
Posted By: 1st_handler
Date Posted: March 19, 2015 at 1:07 PM
Picture is not clear, but it's for Viper 5706V alarm/remote start
Posted By: howie ll
Date Posted: March 19, 2015 at 1:11 PM
24 pin connector H2, pin 21 violet yellow to 85.
Join to H3 pink to 86
I've explained 87 to you and once again, 30 to the second starter wire.
733_tac_2nd._starter.bmp
D27_tacoma_wiring.bmp------------- Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: howie ll
Date Posted: March 19, 2015 at 1:13 PM
Now read this.
https://www.bcae1.com/relays.htm
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: 1st_handler
Date Posted: March 19, 2015 at 1:14 PM
It's okay if you are having a bad day. Everyone does, but I really want to learn. Learning is exciting. Doing things yourself make you proud of yourself more and feel like you are a knowledgeable person.
Posted By: howie ll
Date Posted: March 19, 2015 at 1:16 PM
Well start by reading the link in my last post your understanding at the moment is far to basic to install it.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: oldspark
Date Posted: March 19, 2015 at 1:17 PM
1st_handler wrote:
It's okay if you are having a bad day. Everyone does, but I really want to learn. Learning is exciting. Doing things yourself make you proud of yourself more and feel like you are a knowledgeable person.
Well said.
The problem I find is that many want to be taught rather than learn.
Posted By: 1st_handler
Date Posted: March 19, 2015 at 1:30 PM
On the picture, I don't see any Pin 30
Posted By: howie ll
Date Posted: March 19, 2015 at 1:32 PM
I give up your turn Oldie.
30 is the ISO number for + wire, you obviously haven't looked at that relay link.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: oldspark
Date Posted: March 19, 2015 at 5:43 PM
My turn? Nah - I'm probably about to leave an establishment for similar reasons... there's a point where teaching is no longer the answer; other means of tuition or hazard prevention are required.
In this thread I feel there's more than enough info whether here or in webland pics & info and the lack of understanding at this point means damage or hazard is unusually likely.
And looking at nonliableness I'll append my previous reply - there is an abundance of learning info on the web. I feel I repeat enough without repeating such basics.
[ In particular being after my reply here I felt like adding maybe it's because I'm inquisitive else self taught that I come up with novel solutions or point out the fallacies in existing beliefs -- tho money is a big spinner for the latter... But more than ever I feel there is little practical benefit to teaching at a low level. (Whereas I have lots of low level things I need to do....) ]
Posted By: 1st_handler
Date Posted: March 21, 2015 at 7:40 AM
Okay, I understand about the relay. So where do I put the external relay in vehicle. Is there a place in the fuse box for the relay or just hang it some where under the dash board.
Posted By: 1st_handler
Date Posted: March 21, 2015 at 7:56 AM
For a remote starter. I know now that I probably need a relay for the second starter, but if you have two ignitions do you need a relay for the second ignition as well?
Posted By: 1st_handler
Date Posted: March 21, 2015 at 7:58 AM
I know a little that the SPST and SPDT are functioning the same, but which choice is better.
Posted By: oldspark
Date Posted: March 21, 2015 at 8:06 AM
With compatible mounting and price & size being the same, SPDT because it can be used as an SPST.
Posted By: 1st_handler
Date Posted: March 21, 2015 at 8:19 AM
Wonderful. So is there a place in the fuse box for the relay? Or just hang it under the dashboard?
Posted By: oldspark
Date Posted: March 21, 2015 at 8:47 AM
I don't know about the fusebox - have a look.
And like most inorganic things, relays should be mounted, not hung.
Posted By: howie ll
Date Posted: March 21, 2015 at 8:51 AM
Two ignitions?
Did you even look at the referral guide you posted on page 1? Pink in the heavy duty lead, H3 for one ignition, pink/white for the second ignition.
Again look at those diagrams I posted.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: 1st_handler
Date Posted: March 21, 2015 at 9:02 AM
Looked at your diagram, doesn't look like I need a relay for a second ignition.
Posted By: howie ll
Date Posted: March 21, 2015 at 9:05 AM
Finally enlightenment but still, don't attempt this yourself, it's going to be long winded and expensive. You're breaking all the rules of competence. Just read my signature lines.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: oldspark
Date Posted: March 21, 2015 at 9:08 AM
Agreed!
Posted By: 1st_handler
Date Posted: March 21, 2015 at 9:09 AM
Of course not now, not until I am sure about what I am doing.
Posted By: 1st_handler
Date Posted: March 23, 2015 at 1:19 PM
Okay more questions.
For Diodes: I read these diodes (1N4001/L, 1N4004/L, 1N4007/L...)
I know their function or purpose is the same, but are these the same? does it matter which one you use if they have the same amp? Why do the come with different number on them? What are the numbers represent?
Posted By: howie ll
Date Posted: March 23, 2015 at 1:33 PM
Read the section here on diodes.
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Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: 1st_handler
Date Posted: March 23, 2015 at 2:45 PM
Not much info. Basically they have the same function. Doesn't talk much about each individual.
Posted By: oldspark
Date Posted: March 23, 2015 at 4:00 PM
Use 1N4004 or 1N4007.
Posted By: 1st_handler
Date Posted: March 23, 2015 at 6:37 PM
Howeii mentioned on the first page: It's also advisable to place a diode 1N4004 across 85 and 86, band to 86 to prevent back EMF (c. 200 volts) destroying your RS on relay shutdown.
I went to look around in the Radioshack today. They are running out of business. I found some rectifier diodes and want to purchase to keep for future use, but they rated 1.5A instead of 1A.
So my question is can this 1.5A diodes used in place of the 1A.
Peak Inverse is 1000v
Foward current is 1.5A
Peak surge current is 50A
Posted By: 1st_handler
Date Posted: March 23, 2015 at 6:41 PM
The model number for this diode at radioshack is GP15M
Posted By: tedmond
Date Posted: March 24, 2015 at 8:25 AM
yes that will work just fine.
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Ted
2nd Year Tier 1 Medical School
Still installing as a hobby...pays for groceries
Compustar Expert
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