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Hi from SFO bay area and cheap chimes for 2011 GMC Sierra!

copilotf4u

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copilotf4u New Member

copilotf4u

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Thanks for this site!!! I found great info on the RAP(retained accessory power)thanks Diesail , and even a link to the Electrical Manual 2011 Light Duty Full. However there was little info on a chimes replacement at low cost when installing an aftermarket radio. I do not know why no one else thought of this, but.....
Make your own cheap chime module as follows!!! :driving:

I fabricated a chime module by using the guts out of the stock radio (am/fm only) to provide the beeps/chimes for the other systems! I wired the "Low Speed GMLAN Serial Data" pin 13 (dk grn) input of the radio to X5 pin C on the MBEC, Radio BATT pin 1(red/wht) to X5 pin D for the +12V to power the radio.

(For the location of X5 and MBEC see the post by Diesail:http://www.gm-trucks.com/forums/topic/109163-rap-how-to-on-nbs-keyed-accessory-power/)

Ground pin 8 (blk) to frame ground using a mounting screw. Also added a small 3" speaker to the left speaker outputs across pins 2(tan) & 9(gray). Note: you only need the base board for this, the front panel is not required or wanted. (It should be noted that before you take the radio apart you need to turn it on and turn the VOLUMN down to ZERO, otherwise you night hear static in the speaker if the radio comes on without the front panel attached.The chime does not use the volume control) You also do not needed the large side heat sink since this only drives a small speaker at low volume. Get a plastic or metal box just big enough to hold the flat board and mount it anywhere under the dash, with only the connecter coming out one side. I used the factory metal box, but cut it down so it is only 1.5" tall, and mounted it on the back wall behind the driver's seat. (You might note that the way I did this I can temporarily plug the front panel back in if I ever need to!) I mounted the small speaker on the door column, inside and right below the opening for the seat belt, and drilled a few holes to make a grill out of the plastic trim. I ran the other two wires for the chime module under the door opening trim to the MBEC. This works very well and didn't cost anything, since I had the radio already.

The left photo shows the two connection to X5 on the MBEC at the bottom (the orange and blue/green wires). I didn't have the right colors to match the other end, but these are close to red and green! The right photo show the factory metal box after I cut it down to 1.5" tall. The lid was left off to show the main board. Of coarse you can use a plastic box if wanted.
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copilotf4u New Member

copilotf4u

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Two more photos that show the completed project, with chime module mounting location that shows the ground wire going to mounting screw and speaker location with grill holes on door column trim panel. Note: My wife wanted the chimes to be louder that is why I choose to mount it higher, otherwise it could be lower or even under the dash or under the seat, since it is only a 3" speaker.

 

 

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Below of coarse shows is the real reason I went through all of this, to get rid of that stock radio!! This also shows the METRA 99-3305, Dash kit for mounting an aftermarket radio with Under radio pocket & Recessed DIN. This gives the installtion a very professional look, and with the new chime module a professional sounding chime!

 

post-122355-0-42510300-1367738898_thumb.jpg :seeya:

 



Thanks for reading all of this, and I hope this helps other to save a little money in this tight economy. God Bless you all and save us from the liberal idiots!!

 

I'll cling to my Bible, guns, and country any day over that idiot in the white house! :flag:



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