short 2 wires together
Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=125203
Printed Date: April 29, 2024 at 1:24 AM
Topic: short 2 wires together
Posted By: TooDark
Subject: short 2 wires together
Date Posted: December 22, 2010 at 1:37 PM
I need to use a relay to short two wires together using a neg input. Can anyone help?
Replies:
Posted By: oldspark
Date Posted: December 22, 2010 at 6:05 PM
Convert a Negative Output to a Positive Output, but keep #86 to +12V and do not connect #30 to +12V...
#30 & #87 are to the 2 wires to be shorted.
Posted By: howie ll
Date Posted: December 23, 2010 at 6:09 AM
What are trying to do SWITCH or connect two wires?
Just use 87 and 30 terminals on any standard relay.
-------------
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: December 23, 2010 at 6:11 AM
Neg source to 85,
Pos supply to 86,
In at either 30 OR 87,
Out at either 30 OR 87.
Oh and a 1N4004 diode across 85 and 86 with its band towards 86.
-------------
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: TooDark
Date Posted: December 23, 2010 at 6:29 PM
Thanks, this is for 2006 Honda odssey trunk release
Posted By: howie ll
Date Posted: December 23, 2010 at 7:10 PM
Which might as well be a Pterodactyl's a/hole.
Are you using an alarm aux to switch a pos going motor wire?
You should have asked that question originally and had the answer 2 post's ago.
-------------
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: TooDark
Date Posted: December 23, 2010 at 10:44 PM
howie ll wrote:
Which might as well be a Pterodactyl's a/hole. ????????
Are you using an alarm aux to switch a pos going motor wire? I will be using an alarm neg output
You should have asked that question originally and had the answer 2 post's ago. Sorry
Posted By: howie ll
Date Posted: December 24, 2010 at 6:43 AM
It's the way you phrased the question. You don't actually short two wires together, you join them. Shorting is usually applied to "shorting to ground" which can lead to all sorts of problems.
I take it you mean the WHITE/ black and yellow/blue wires at the switch.
Then wire it thus.
Solder a short length of wire to each, then:
Aux output to 85.
12V+ 3amps fused to 86.
One of the soldered wires to 87.
The other to 30.
-------------
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: December 24, 2010 at 6:50 AM
Just to complicate things, the above info was directwire and I'm slightly suspicious because WHITE/ black is often a ground so it must be tested.
A/Vox gives a more common set-up of white (motor wire +) at the fuse box.
Wire as follows:
Aux out (from alarm) to 85.
CUT that white wire and join the fusebox (front) side to 87a.
Trunk (rear) cut side to 30.
12V+ constant at 15 amps fused to 87 and 86.
In both of the above cases a diode is required across the relay coil, 85 and 86, type 1N4004 with its band towards 86.
Test your vehicle with a DMM to see what you have. If it's the white that wire will go to ground (test) until the switch is activated then it will give a 1 second pos burst, release the trunk and revert to ground.
-------------
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: TooDark
Date Posted: December 24, 2010 at 9:21 AM
howie ll wrote:
Just to complicate things, the above info was directwire and I'm slightly suspicious because WHITE/ black is often a ground so it must be tested.
A/Vox gives a more common set-up of white (motor wire +) at the fuse box.
Wire as follows:
Aux out (from alarm) to 85.
CUT that white wire and join the fusebox (front) side to 87a.
Trunk (rear) cut side to 30.
12V+ constant at 15 amps fused to 87 and 86.
In both of the above cases a diode is required across the relay coil, 85 and 86, type 1N4004 with its band towards 86.
Test your vehicle with a DMM to see what you have. If it's the white that wire will go to ground (test) until the switch is activated then it will give a 1 second pos burst, release the trunk and revert to ground.
I will give that a try
Thanks
Posted By: oldspark
Date Posted: December 26, 2010 at 6:45 PM
FYI - I consider "short" valid.
Though usually implying an UNDESIRED connection, a short is nevertheless a connection or joining of 2 "circuits" whether it be to +ve, -ve, gnd, AC, DC, input to output, capacitor plates, inter-windings etc etc.
In general usage, shorts should merely be considered "connections".
And when used as "it's probably a short that is blowing your [lamp or load - anything other than a fuse or relay etc]", it should simply be considered incorrect (in general).
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