Relay Diagram No10 Four Wire Reversal
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=146440
Printed Date: April 24, 2024 at 10:31 PM
Topic: Relay Diagram No10 Four Wire Reversal
Posted By: shaunie61
Subject: Relay Diagram No10 Four Wire Reversal
Date Posted: September 14, 2020 at 7:57 AM
This diagram clearly states at the top that the diagram can be used when both motor legs of the door locks are normally open.
Can this diagram be used or adapted when both relays rest at ground?
Thank you
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Shaun
Replies:
Posted By: the12volt
Date Posted: September 14, 2020 at 9:06 AM
Posted By: shaunie61
Date Posted: September 14, 2020 at 3:51 PM
Thanks,I already have tried that one.The result is that the motors,when operated via the remote keyless entry are very weak,although they do move.When the motors are operated by the factory switch they are strong and fast operating
The only change I made to the diagram you suggested is a positive trigger from the RKE unit to 86 with a diode across to a grounded 85 to both lock and unlock relays.
There are only four wires at the switch.
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Shaun
Posted By: i am an idiot
Date Posted: September 14, 2020 at 5:15 PM
Before you try this, let us know what vehicle you are dealing with.
https://www.the12volt.com/relays/relaydiagram3.html
Posted By: shaunie61
Date Posted: September 14, 2020 at 6:25 PM
Thanks, it's a UK spec 1998 mitsubishi L300.
The van was equipped with factory actuators wired to a factory three position switch. There are no relays that I can find (or hear). There is nothing wired into the drivers door so I opted for two relays as a preference.
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Shaun
Posted By: shaunie61
Date Posted: September 15, 2020 at 6:33 PM
Was this information helpful??
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Shaun
Posted By: i am an idiot
Date Posted: September 15, 2020 at 6:45 PM
It being a UK vehicle I do not have any wiring info on it. If there are no relays between the switch and the actuator, the above link I provided should be what you need.
It is ok to use 86 as positive out of your unit and ground 85. But you do need to supply 87 with a high current capable positive.
Posted By: shaunie61
Date Posted: September 15, 2020 at 8:42 PM
Thanks, I'll check it...
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Shaun
Posted By: shaunie61
Date Posted: September 16, 2020 at 5:27 PM
I have a length of 10 gauge stinger OFC cable leftover from something else. I would think this would satisfy the requirements at pin 87 direct from the auxiliary fuse box??
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Shaun
Posted By: geepherder
Date Posted: September 17, 2020 at 4:08 AM
Yes, 10 gauge is more than sufficient.
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My ex once told me I have a perfect face for radio.
Posted By: shaunie61
Date Posted: September 17, 2020 at 10:24 AM
That said, I'm not sure I will be able to fit it inside the 6.3 spade connectors...
For the other outputs from the relays to the motor legs what size would be your minimum? The factory wiring is incredibly thin which suggested to me that I only needed to go one size higher for this to work and work well. It works but the motors are slow to lock and unlock compared to the factory switched circuit.
Maybe the new cables need to be upgraded to enable the motors to work without restrictions? I have searched online but cant find the information I need,
TIA
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Shaun
Posted By: geepherder
Date Posted: September 17, 2020 at 12:28 PM
The one's with the yellow insulation are for 10-12 gauge wiring.
Are the relays you are using old, or new? As they are used repeatedly, the contacts will have higher than normal resistance. Installing a suppression diode across the coils will help limit this.
Topic closed. See https://www.the12volt.com/installbay/forum_posts.asp?tid=145339------------- My ex once told me I have a perfect face for radio.
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