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INT: Radio controls through cruise control switches

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  • P5ylance
    replied
    thanks lucifer! I'm planning to do this and the variable wiper mod... i think i'll skip on the bell chime and just wire the switch

    Leave a comment:


  • lucifer1
    replied
    1/4 watt resistors are fine.

    The r40-11d-24 is 24v so it will not work.

    Small diodes like the 1n4001

    Aprrox 3"x2.5"x7/8" for the enclosure

    No breadboard, just wired them up and put in the enclosure

    Leave a comment:


  • P5ylance
    replied
    What watt rating were your resistors? I see some 1/4 watt, 1/2 watt and 1w. Does it matter? I can find enough of the r40-11d2-12 relays, so would the r40-11d2-24 work? Are there any other specs for the diodes you used? Should I just pick up some 30v diodes? What's the dimension of your box? Dis you put these on a bread board or did you just wire them up and set them loose in the box?

    Leave a comment:


  • lucifer1
    replied
    Easy to wire.

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  • Chris2388
    replied
    how hard to wire that into a 92 cb7 lx?

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  • lucifer1
    replied
    2002 Crv Lx

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  • Chris2388
    replied
    Originally posted by lucifer1 View Post
    What radio is this???

    Leave a comment:


  • real_mckoy
    replied
    thats crazy cool man ...

    Leave a comment:


  • lucifer1
    started a topic INT: Radio controls through cruise control switches

    INT: Radio controls through cruise control switches

    Reposting since this was lost

    I have been asked a few times for a diy on turning cruise control switches into a radio remote switch, so here is as close as you will get.


    Honda has been putting redundant controls on since the 1st gen Legend. This was originally done by having separate switch inputs into the radio. In the mid 90's there was a change from multiple inputs to a single control wire input. The single wire connected to ground via different resistances provides for control over Volume up, Volume down, and preset up/Track up. Only certain radios had the capability and all seem to different pin configurations until the 1998 generation. With 98 generation 20 pin radios, all have the remote input on pin 3. Starting with the 2003 generation radios, two more functions are added, Mode and preset/track down along with a change in resistances.

    With the 98 radios, all the double dins I have come across have remote capability. Even if the car it came in didn't have the option. You can test by connecting a 100ohm resistor between pin3 and ground, the volume will go down.

    When I bought my CRV in 2002, I figured out the stock radio was capable of remote control. Before I figured out which steering switch to add that would fit my steering wheel, I wired up the cruise control switches to dual function as a radio remote. Since that radio was laying around collecting dust I put in the accord and of course wired up the cruise switches to control the radio.

    This is fairly easy to do if you are electronically capable and will cost about $20 in parts. There only five wires to connect to the vehicle, 4 at the cruise control module= accel, decel, cruise on+, ground and 1 at the radio= remote in.

    The hard part is wiring up the relays. It is actually a complex circuit that use 3 relays. The first two control the radio and the third shuts off the remote function when the cruise is turned on.

    parts you will need
    2 NTE r40-11d2-12 or similar dpdt relay
    1 tyco/bosch standard 5 pin relay or 3rd NTE r40-11d2-12
    100ohm resistors
    270ohm resistors
    620ohm resistors
    diodes
    small plastic project box
    18g wire
    98-99 cl radio or 98 + radio already installed with a connector from tl/cl/accord that has a wire in pin 3

    This is my latest created circuit which only uses 3 relays. I have yet to use it in an actual vehicle but works perfectly on the bench. The setup I am using in the accord is much simpler design only using vol+ and vol- and not the track/seek+.

    Wire the relays according to this diagram. Pay close attention, it will probably be confusing to most of you but follow it exactly and don't rush. Be very careful handling and soldering the relays as the pins are very easy to break off. When finished place inside a project box. An optional cap and resistor on the diagram are present inside the factory remotes. It works without them but I think 3.6K is maybe a terminator to let it know when commands are not present and the 1.ouf cap is to smooth things out? I am sure Honda had a good reason for them.



    After the relays are wired place them a plastic project box to protect them like this


    Locate the cruise control module under drivers dash
    connect relay 1 trigger wire to pin 6 lt green/black wire
    connect relay 2 trigger wire to pin 5 lt green/red wire
    connect relay 3 trigger wire to pin 13 lt green
    Connect ground wire to pin 3 black wire


    If you put in a 98-99 Acura CL(The service manual shows it using the older style connector) connect to pin 12 it is the left one the 2 most center terminals on the bottom row.
    If you are installng a 98 up radio, Connect the remaining remote out wire to radio pin 3. Reading from wire side of connector from top left.

    Test
    press accel for volume up
    press decel for volume down
    press both for preset/track +


    Mount the box under the dash near the cruise module and enjoy.

    This video shows it working with a 2002 crv radio and a 2003 accord switch. I put some 4pdt omron relays together to test with since there are much easier to handle than the circuit board ones. The click heard in the video is from these relays, when the NTE R40 relays are used there is no clicking sound. This also without the 3.6k resistor and 1.0uf cap

    Accord steering wheel through cruise control test


    This video is the older setup working in the accord
    Accord steering wheel volume control

    Testing 07 crv radio



    If you have an aftermarket radio with steering wheel control input, this setup will work through the appropriate PAC-SWI_ adapter




    If you don't have cruise control, add the slip ring. Then you just need to rewire the switch inside the wheel adding resistors and cut the wires on the other side of the cable reel.

    follow this diagram.

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