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Need RAP for my Sirius Receiver


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I have installed a Sirius Satellite receiver in my 99 Eldo with a Bose system. I currently have the power for the Sirius connected to the orange Bat+ wire going into the radio. So when I shut the car off and get out the Sirius is still powered up. What I would like is to have the Sirius work just like the factory radio. I need to tap into the RAP (retained accessory power). I checked out the wiring diagrams and found there is no circuit wire for RAP so it must be inside the radio. So I tried tapping into the power antenna signal wire. For some reason it does not have enough current for the Sirius.

Any ideals how I can make the Sirius receiver come on and with the factory Bose radio??

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I have installed a Sirius Satellite receiver in my 99 Eldo with a Bose system. I currently have the power for the Sirius connected to the orange Bat+ wire going into the radio. So when I shut the car off and get out the Sirius is still powered up. What I would like is to have the Sirius work just like the factory radio. I need to tap into the RAP (retained accessory power). I checked out the wiring diagrams and found there is no circuit wire for RAP so it must be inside the radio. So I tried tapping into the power antenna signal wire. For some reason it does not have enough current for the Sirius.

Any ideals how I can make the Sirius receiver come on and with the factory Bose radio??

No problem I installed an XM in my 2000 STS and tapped into the switched power wire for the Bose radio. There will be a connector with several wires running into the radio. Use a probe that has a grounded light to check each one until you find the wire that is switched on by the on / off function of your radio. Once you find the right wire you will have the retained power as well as having your Sirius switching on and off with your radio. I have used this power connection for over a year with no problems.

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I checked for that circuit, and did probe the harness that went into the Bose radio could not find it. The only wire I found was the orange/black one in the F1 position which is Bat+ all the time. I think on this model the RAP is controlled through a data line going into the radio. The only other circuit I might be able to tap in is the one that turns on the amp, but I might have to run a lead from the trunk. I'll have to get the wiring diagram out again and see if I can find it.

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Edited by Riverfurm
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This should not be too much of a problem, take a look at the fuse boxes, there should be a lug that you can tap into that uses retained power.

But what I dont understand is why you want retained power for your GPS, all you need is power that comes on with your KEY and turns OFF with your KEY, that should be very easy to find. I would NOT use the retained power circuit for the GPS, if that is what you mean by RAP

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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This should not be too much of a problem, take a look at the fuse boxes, there should be a lug that you can tap into that uses retained power.

But what I dont understand is why you want retained power for your GPS, all you need is power that comes on with your KEY and turns OFF with your KEY, that should be very easy to find. I would NOT use the retained power circuit for the GPS, if that is what you mean by RAP

In all my post there is not one mention of GPS. Sirius is a satellite radio receiver just like the radio built into the car but gets it's signal from a satellite and is a pay service. I would like it to come on and off with the factory radio.

"This should not be too much of a problem, take a look at the fuse boxes, there should be a lug that you can tap into that uses retained power."

There are fuse boxes in the trunk and under the hood. If there is a RAP fuse it would mean running a long wire from the fuse. Not very hard, but pain to do. I believe the factory radio get a signal from the serial data line that goes to the Bose radio when to go into RAP. So there is not a circuit that is RAP.

What I need is a circuit number or a cavity number inside a connector that is save to tap into for about 3 amps of power. So if you can probing around with a test light that draw anywhere from .5 to 3 amps and probe a serial data line you can short out a module or something else. If you are going to probe wiring going to electronic modules use a low impedance meter that would not be to large load on the circuit you are testing.

I thought there may be someone on this forum who has done this before on the same year and model so I would not spend time disassembling and probing wiring for a RAP circuit.

Thanks for the help.

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I said GPS when I should have said Satelitte receiver

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Hope this helps

99EldoradoRadio.gif

RadioPhoneFuse.gif

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Hope this helps

99EldoradoRadio.gif

RadioPhoneFuse.gif

Thanks for the wiring diagram, it's the same one I have in my shop manual. As you can see in the diagram there is no RAP power going into the radio. I have the receiver tapped into the #40 circuit orange wire F1 as my power source. If you look at circuit 145 DK Green F3 it's the signal wire for the power antenna relay. Looks like a good place to pull my power from since the antenna will only work when the radio is on. No such luck. It has a low current out put not enough for the Sirius receiver. I check the specs for the Sirius and it was 2amps at 5 volts, so when you add in the power converter (12v to 5v) it will be around 3 amps. To much of a current draw for that circuit.

I check the current draw of a relay I had in my shop. It was 187 milliamps. I would think the radio should handle that. I will tap the relay into circuit 40 B+ for power and circuit 145 for the trigger of the relay sine it draws such little current. I think this will work. If I don't have any honey doo list I will try today. The only concern I have is when you shut down the radio and the relay denergizes it throws out a voltage spike. But since this circuit is for the power antenna I would think it would have some type of voltage spike protection.

I'll let you know if it works!

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So I did wire a relay into the output for the power antenna. Now my Sirius receiver works along with the radio. When the radio turns on so does the receiver and when the radio shuts off so does the receiver.

Just how I wanted it to work. Thanks for the help.

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