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 Post subject: Delco T-400 8 Track player - wiring question.
PostPosted: Mar Sat 16, 2013 6:12 pm 
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Joined: Aug Mon 29, 2011 4:08 am
Posts: 2343
Location: The High Plains, but not drifting (79007).
I'm about to have a crack at a 1968 Delco 8 track player. It's a T-400 type, model # 730488-A and my first hurdle is identifying the wires that come out of it.

As you can see, the colours don't match up on both part of the plug, so guesswork won't help me.

Any info would be gratefully received. Thanks.

Attachment:
delco t-400b.jpg
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Last edited by clueless on Mar Sun 24, 2013 9:06 pm, edited 1 time in total.

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 Post subject: Re: Delco T-400 8 Track player - wiring question.
PostPosted: Mar Sat 16, 2013 7:45 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 2082
Location: Lakewood, California
Service information and schematic is in Sams AR-51, but the connectors and wire colors are not shown.

7304884 T-400 tape information is in Delco radio bulletin 6D-1968-1, but the connectors and colors are different (6-conductor plug and connector. 1-Purple, 1-Brown, 1-Tan, 1-Blue, 2-Black, colored wires).

7304884-A (1968 Buick, Riviera & Special Tape Stereo) is in 6D-1968-1, supplement 3. I don’t have it.

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Meade


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 Post subject: Re: Delco T-400 8 Track player - wiring question.
PostPosted: Mar Wed 20, 2013 6:15 pm 
Member

Joined: Aug Mon 29, 2011 4:08 am
Posts: 2343
Location: The High Plains, but not drifting (79007).
Thanks for the info, Meade.

MAG wrote:
7304884 T-400 tape information is in Delco radio bulletin 6D-1968-1, but the connectors and colors are different (6-conductor plug and connector. 1-Purple, 1-Brown, 1-Tan, 1-Blue, 2-Black, colored wires).

7304884-A (1968 Buick, Riviera & Special Tape Stereo) is in 6D-1968-1, supplement 3. I don’t have it.

This part is interesting. While googling, I came across this one for sale at Elliotts Radio - as you can see, it's clearly labelled as a 7304884 rather than the -A variant, but has the 8 pin connector and yellow, green etc. wires that mine has.

http://www.elliottsradio.com/store/gm-adaptors-remote-tape-units-sold-as-parts-units/1968-buick-riviera-special-remote-mount-8-track-player-parts-unit.html

I don't know what to make of that...


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 Post subject: Re: Delco T-400 8 Track player - wiring question.
PostPosted: Mar Wed 20, 2013 6:40 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 2082
Location: Lakewood, California
It’s probably a running change before supplement 3 was published. I find many anomalies when trying to identify various auto radios.

I would be glad to send a PDF of the output schematic I have for the 7304884, maybe you can use it to trace out the wiring in your tape unit. The two black wires probably go to chassis ground (easily verified).

PM with your email address and I'll scan the information for you.

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Meade


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 Post subject: Re: Delco T-400 8 Track player - wiring question.
PostPosted: Mar Thu 21, 2013 1:28 am 
Member

Joined: Aug Mon 29, 2011 4:08 am
Posts: 2343
Location: The High Plains, but not drifting (79007).
Thanks again! PM sent. :mrgreen:


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 Post subject: Re: Delco T-400 8 Track player - wiring question.
PostPosted: Mar Sun 24, 2013 9:03 pm 
Member

Joined: Aug Mon 29, 2011 4:08 am
Posts: 2343
Location: The High Plains, but not drifting (79007).
I thought I should report back with the outcome.

Meade's "1969" schematic was the one that did the trick (which seemed a little odd, given that mine was made in Nov 1967), though the other one, together with inspection of S3, provided confirmation of where the power went in and out.

There was surprisingly little to be done to it - it wanted a clean and the track change mechanism needed re-lubing, but that and one ground wire that needed resoldering was all. The belt (actually, it looked like two belts in parallel) is probably on its last legs, but that's hardly surprising and no big deal.


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