English pronunciation, please help?

This is a case where the average native speaker is not suited to answer the question.

Such speakers usually have never even heard of the schwa, a vowel sound that has no single letter dedicated to it in English.

It is the A of about, the E of listen, the A & O of abandon, the U of Cajun, I of pencil, the AI of mountain, and not written at all in rhythm (coming between the TH and M) In English, it occurs only in unstressed syllables..

I know some native speakers who would vehemently argue otherwise, wrongly believing that letters for vowels always/usually match vowel sounds.

The suffix -ed, when fully pronounced as syllable, is the schwa followed by /d/. No guessing, no doubt. Not something I decided on my own, but something I have specific training in.

I am certain your use of "uhd" represents the schwa followed by /d/.

-ed in wanted does not rhyme with bed/fed/led/red etc. Those thinking otherwise are being deceived by minds that are not considering the schwa as a choice.

FYI: In many dialects of American English, the T of wanted is not actually pronounced in fast speech. /WA nəd/, where /ə/ is the International Phonetic symbol for the schwa. When it is pronounced, the syllables are /WAN təd/

note also: The wiktionary link posted by the "Anonymous" person clearly indicates a schwa, in both the American and British versions. The phonetic description provided is from someone who either doesn't know about the schwa or who doesn't know how to write it.

Either "uhd" (schwa) or like "id".

wan - ted