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<u><b>Relay</b></u></div>
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<tr valign="TOP"><td class="redb">Constant to Momentary Output</td></tr>
<tr><td class="desc">The capacitor allows the
         coil of the relay to be energized until the capacitor stores a charge,
         thus de-energizing the coil. The resistor bleeds off the charge of the
         capacitor when positive voltage is removed from the other side of the coil. You
         can increase the output time by simply changing the value of the capacitor.
         This one will give you about a 1/2 second output.<br />
 
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<img alt="Constant to Momentary 12v(+) Output Relay Diagram" src="https://www.the12volt.com/12voltimages/constantmoment.gif" style="max-width: 100%;" /></center>
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<tr valign="TOP"><td class="redb">Momentary to Constant Output</td></tr>
<tr><td class="desc">Once activated by the relay on the left, the relay's coil on
         the right will stay energized until either ground or 12v(+) is removed.
         You can do this with another relay. Or try connecting to a 12v(+) switched
         source instead of a constant one. Or you can have a door trigger activate
         a relay to break continuity. The variations are practically endless.<br />
 
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<img alt="Momentary to Constant 12v(+) Output Relay Diagram" src="https://www.the12volt.com/12voltimages/momentconstant.gif" style="max-width: 100%;" /></center>
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<tr valign="TOP"><td class="redb">Pulsed to Steady Output</td></tr>
<tr><td class="desc">If you have cornering lights and want them to come on only when your turn signal
         is on and you do not have a steady output, use the following for each side. This will give you a steady output 
         while the turn signal is on. Increasing the size of the capacitor will give you a longer output if needed.<br />
 
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<img alt="Pulsed to Steady Output Relay Diagram" src="https://www.the12volt.com/12voltimages/turninglights.gif" style="max-width: 100%;" /></center>
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<tr valign="TOP"><td class="redb">Connecting Additional Devices to the Remote Turn On Wire</td></tr>
<tr><td class="desc">Using a 30 amp SPDT relay, connect terminal #87 to constant 12 volts positive with a fuse 
   rated to the sum of the additional accessories you've added and the components you need to turn on. 
   (If you have two fans rated at 5 amps each and a neon light rated at 10 amps, you would use a 20 amp 
   fuse plus 200 ma for each amplifier and processor.) Connect terminal #85 to ground, terminal #86 to 
   the remote turn on wire from the head unit, and terminal #30 to each accessory with an appropriate fuse.
   A fuse (not shown) could also be used between the output of the relay (#30) and the remote turn
         on wire of the amplifiers and/or processors for extra precaution.
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<img alt="Connecting Additional Devices to the Remote Turn On Wire Diagram" border="0" src="https://www.the12volt.com/12voltimages/addremacc.gif" style="max-width: 100%;" /></center>
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<tr valign="TOP"><td class="redb">One Channel to Multiple Outputs</td></tr>
<tr><td class="desc">You can add multiple functions to an AUX 
output of an alarm or keyless entry 
         by adding a relay in series with the output wire as shown to 
any switch or accessory with an output. 
         Only one output can be active at anytime, the one first in the 
chain (bottom relay in diagram) will
         have priority, so if you wanted to have the ignition from the 
key to have priority over the ignition from the remote start,
         you would connect it to the first relay and the output of the 
remote start to the next and so on. Also pay attention to the top
         relay shown. Terminal #87a (the default output) will be active 
only when none of the coils of the relays are energized. There are many 
other 
         accessories that can be used with this, including the remote 
turn on wire and/or power antenna wire of your head unit.<br />
 
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<img alt="One Channel to Four Outputs" border="0" src="https://www.the12volt.com/12voltimages/1in4outa.gif" style="max-width: 100%;" /></center>
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<tr valign="TOP"><td class="redb">Latched On/Off Output Using a Single Momentary Pulse</td></tr>
<tr><td class="desc">Similar to the <a href="https://www.the12volt.com/relays/page5.asp#mtc" title="Momentary to Constant Output">momentary to constant</a>
 configuration above, we can 
   engage and disengage the latched output with a single pulse from a 
switch or an output from an alarm or remote keyless entry. 
   The first pulse from the switch will engage the latch. The next pulse
 from the switch will disengage the latch.
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<img alt="Latched Output Using a Single Pulse" border="0" src="https://www.the12volt.com/12voltimages/latchonoffsp.gif" style="max-width: 100%;" /></center>
Here's the same configuration as the one above that you can use if you do not have any  <a href="https://www.the12volt.com/diodes/diodes.asp" title="Diodes">*diodes</a> 
   available and/or only want to use SPDT relays. A negative output from an alarm,
   remote keyless entry, or other device can be used in place of the switch shown in both of these diagrams.
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<img alt="Latched On/Off Output Using a Single Momentary Pulse" border="0" src="https://www.the12volt.com/12voltimages/latchonoffspnd.gif" style="max-width: 100%;" /></center>
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<tr valign="TOP"><td class="redb">Radio On Until Door Opened (Retained Accessory Power)</td></tr>
<tr><td class="desc">If you wish to keep the radio (or any 
other device that is powered by an accessory circuit) on until a door is
 opened, you can do so by creating a 
   latch when the accessory is turned on with the relay shown below on 
the left, 
   then breaking ground to the latch when a door is opened as shown with
 the relay below on the right. 
   While this will keep the radio on, the entire accessory circuit will 
see 12V+ until a door is opened with the key in the off position.
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<img alt="Radio On Until Door Opened" border="0" src="https://www.the12volt.com/12voltimages/raddelay.gif" style="max-width: 100%;" /></center>
If you want to prevent 12V+ from feeding back into the accessory 
circuit or have more than one device on this circuit and do not want all
 of them to stay powered, you can isolate the device you want to stay 
powered  
   by cutting the accessory wire going to it and adding two 1 amp diodes
 and an additional relay as shown below. The first diode near the top 
left of the diagram is to prevent 12V+ from going back into the 
accessory circuit.
   The second diode between terminals 87 and 86 prevents the radio from 
pulling current through the first diode. If the second diode is not in 
place, the first diode will become toast. The additional relay is needed
   to prevent the radio from turning off when the key is in the 
accessory position and a door is open.
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<img alt="Radio On Until Door Opened" border="0" src="https://www.the12volt.com/12voltimages/raddelay3.gif" style="max-width: 100%;" /></center>
Below is the same set up as above for <b>positive door triggers</b>.
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<img alt="Radio On Until Door Opened" border="0" src="https://www.the12volt.com/installbay/uploads/radio-on-positive_door_trigger.gif" style="max-width: 100%;" /></center>
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<tr valign="TOP"><td class="redb">Basic Remote Start Relay Diagram</td></tr>
<tr><td class="desc"><span style="color: red;">DO NOT INSTALL this or any other remote
         start system not specifically designed for a manual transmission into a vehicle with a 
   STANDARD TRANSMISSION.</span> The
         consequences should be obvious, but in case you don't already know what they are, 
   property damage and serious injuries or even death could occur as a result. 
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Below is a basic relay remote start system.
         It is <b>not</b> shown with any inhibits, nor a single trigger to activate
         and deactivate it, and does <b>not</b> have "rev protection". <b>You are
         much better off with a system you can purchase from a local dealer or retailer</b>.
         They include many important safety features and come with a warranty, unlike
         the one below. But if you must make one from relays, here are the basics
         (shown below <b>without</b> the diodes across the coils). You will have 
         to customize this to work with the vehicle
         you plan to install it into. Make note of each wire's function in the harness
         connected to the back of the ignition switch. You will have to duplicate
         these in order to have a successful installation. 
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<b>Only advanced installers
         should attempt this</b>. I have installed several of these as a challenge and they are still
         on the road today. I included timers and inhibits in them to perform the
         same as a manufacturer's remote starter, but I still prefer to use theirs. Manufactured units take
         far less time to install from start to finish and are a whole lot smaller.<br />
 
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<img alt="Basic Remote Start Relay Diagram" border="0" src="https://www.the12volt.com/12voltimages/relayremotestart.gif" style="max-width: 100%;" /></center>
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Sumber : <a href="https://www.the12volt.com/" target="_blank">www.the12volt.com</a></div>
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