RAP stands for Retained Accessory Power. It is the circuit responsible for powering accessories when the key is off. Sounds like something is staying on that shouldn't. Hard to say what though with the information here. if this started happening right after you put in the new radio i would check into that. otherwise start checking accessories like power mirrors,seats, locks and see it something is staying on that shouldnt. i good one to check would be the glove box light or the light under the hood. you can unplug them and then test your draw to see if thats where is was.
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Thank You for the information. I took the fuse out and will check the battery tomorrow. The only device that stays on with the key off that I can tell is the Radio. Now I turn the truck off and the radio goes off. I don't know what I could have done putting the new old radio in. Just a couple of clips and plug in the wires done.
Thanks again I did not know anything about RAP now I do.
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