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Need two starter outputs, only have one?

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=143735
Printed Date: May 16, 2024 at 7:50 AM


Topic: Need two starter outputs, only have one?

Posted By: spadz93
Subject: Need two starter outputs, only have one?
Date Posted: November 06, 2017 at 10:09 PM

Hey everyone, gonna be installing the viper value 2 way 4205v kit and a flashlogic FLCAN in the girlfriend's '15 WRX. Just looking over the wiring diagrams, and I noticed something. The wiring diagram calls for two starter outputs on the viper kit to go to two separate wires on the ignition switch. However, as i'm looking at the pinout for the viper kit, I only see one positive output for the starter. Should I just "Y" the one starter output from the viper onto the two wires at the ignition switch? There are also some negative starter outputs on the module, should I run one of those to a relay to supply a second 12v to the second wire on the ignition switch?

Wiring diagram is type 2 on the flashlogic diagram.

https://www.acsdistributors.com/uploads/techinfo/viper/manuals/Responder%20One%20Install.pdf

https://images.idatalink.com/corporate/Content/Manuals/DL-SUB3/FLC-AL(DL)-SUB3-EN_20170721.pdf



Replies:

Posted By: bogucki
Date Posted: November 07, 2017 at 12:34 AM
yes you need to use the (-) starter wire from the viper to a relay to make a 2nd (+) starter wire make sure to fuse it, do not Y the viper main starter wire, subaru has the starter wires separate for a reason.

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BOGUCKIALEX




Posted By: howie ll
Date Posted: November 08, 2017 at 9:53 AM
Never ever join the two starter wires, the second may be simply a cold start enrichment device, if so you'll do expensive damage to the engine management.
And diode the relay, feed back will damage your unit.
Here's a typical diagram:-


E67_ssr.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: spadz93
Date Posted: November 08, 2017 at 10:05 AM
howie ll wrote:

Never ever join the two starter wires, the second may be simply a cold start enrichment device, if so you'll do expensive damage to the engine management.
And diode the relay, feed back will damage your unit.
Here's a typical diagram:-


E67_ssr.bmp


Any specific diode specs? or since it's a ground signal, any will do?




Posted By: howie ll
Date Posted: November 08, 2017 at 10:12 AM
200 volts on the back EMF, use a 1N4004, it's enough and it's the most readily available.
An alternative is to place the diode between 85 and 86, band to 86.
When a relay shuts down, it can send that 200 volts back to your RS.
Don't believe that that DEI product is internally diode protected so it will can all the
NEG 24 pin plug and lock/unlock outputs.It blows the output driver which controls them all.
Seen it happen here 2 years ago AFTER I told the guy to use diodes, he cooked the above circuits.
I wormed the answer out of him that he didn't listen!


-------------
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: spadz93
Date Posted: November 08, 2017 at 10:36 AM
howie ll wrote:

200 volts on the back EMF, use a 1N4004, it's enough and it's the most readily available.
An alternative is to place the diode between 85 and 86, band to 86.
When a relay shuts down, it can send that 200 volts back to your RS.
Don't believe that that DEI product is internally diode protected so it will can all the
NEG 24 pin plug and lock/unlock outputs.It blows the output driver which controls them all.
Seen it happen here 2 years ago AFTER I told the guy to use diodes, he cooked the above circuits.
I wormed the answer out of him that he didn't listen!



Quite positive those are the ones I have more of, so that works out perfectly. I'll make sure to include that in my pre-install bench wiring





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