new deck, speaker problems? also code 12

cre · 12-25-2009, 07:11 PM

Ok, I spoke to Jeff Lange (human Supra encyclopedia... it's creepy). There was an upgraded sound system with CD player available for the '88 year model. The external amplifier mounted right under the stereo (not under the seat). The '89 and later had an upgrade available which had an amp that sat under the seat. There were no packages available from the factory which had an external amp (under the deck or under the seat) in '86.5 or '87 model years.... the harness didn't even have the plugs so the under the seat amp is unlikely to have been added by any dealer as an option.

toyota83 · 12-29-2009, 07:47 PM

maybe its got one, thanks for the input. i will check in a few minutes. whats kind of wierd is that i wired a brand new speaker directly to the deck... still nothing. now i guess this could mean both my cd players are fried. im not a wiring guy. i love carburetors

in the rear near the harness i have the antenna wire, and an rca-looking wire. ill post a pic. any clue as to what this is for? (provided i dont find an amp under my seat)

reydio · 12-29-2009, 10:09 PM

Quote:

Originally Posted by toyota83

in the rear near the harness i have the antenna wire, and an rca-looking wire. ill post a pic. any clue as to what this is for? (provided i dont find an amp under my seat)

I had that on my car too, the rca looking wire is part of the antenna system, one is connected to the power antenna and the other one is connected to the hatch. For after market, it's not really required, so I just left it un hooked.

cre · 12-30-2009, 03:09 AM

The OEM stereos used two antennas... one in the glass and the mast type. I always thought the glass one must be for AM, but I've been informed by a couple different people that both were for FM and that the head unit would switch between them to get the best reception...

They are both antennas... This much I know.

toyota83 · 12-31-2009, 05:39 PM

wierd. thanks. now ill wait to get some $ for yet another deck

happysupraowner:) · 01-11-2010, 04:58 AM

One thing you may want to try is make sure none of your speakers are grounding out. Some decks have built-in protection to shut off the decks out put so as not to fry it. A easy way to do this is remove your radio, find your ground wire. Get a multi-meter and set it to continuity. Put one probe on your ground wire and go through each speaker wire. If one makes a noise, that is the wire that is grounding out. I would check that first before getting a new deck. Hope this helps.

12-25-2009, 07:11 PM	#1
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Ok, I spoke to Jeff Lange (human Supra encyclopedia... it's creepy). There was an upgraded sound system with CD player available for the '88 year model. The external amplifier mounted right under the stereo (not under the seat). The '89 and later had an upgrade available which had an amp that sat under the seat. There were no packages available from the factory which had an external amp (under the deck or under the seat) in '86.5 or '87 model years.... the harness didn't even have the plugs so the under the seat amp is unlikely to have been added by any dealer as an option. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

12-29-2009, 07:47 PM	#2
toyota83 Stock Join Date: Dec 2009 Location: minneapolis Posts: 9	maybe its got one, thanks for the input. i will check in a few minutes. whats kind of wierd is that i wired a brand new speaker directly to the deck... still nothing. now i guess this could mean both my cd players are fried. im not a wiring guy. i love carburetors in the rear near the harness i have the antenna wire, and an rca-looking wire. ill post a pic. any clue as to what this is for? (provided i dont find an amp under my seat) __________________ (2) 83 SR5 4x4s, and an 81 parts truck... 89 suburban on 38 inch hawgs 97 dually silverado 5 speed diesel blown up 95 s10 blazer... lt-1 swap??? new toy 86.5 n/a 5 speed mk3 06 raptor 350 96 ZRT600 and im 20 years old...

12-30-2009, 03:09 AM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The OEM stereos used two antennas... one in the glass and the mast type. I always thought the glass one must be for AM, but I've been informed by a couple different people that both were for FM and that the head unit would switch between them to get the best reception... They are both antennas... This much I know. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

12-31-2009, 05:39 PM	#5
toyota83 Stock Join Date: Dec 2009 Location: minneapolis Posts: 9	wierd. thanks. now ill wait to get some $ for yet another deck __________________ (2) 83 SR5 4x4s, and an 81 parts truck... 89 suburban on 38 inch hawgs 97 dually silverado 5 speed diesel blown up 95 s10 blazer... lt-1 swap??? new toy 86.5 n/a 5 speed mk3 06 raptor 350 96 ZRT600 and im 20 years old...

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01-11-2010, 04:58 AM	#6
happysupraowner:) Intake Join Date: Apr 2009 Location: Bristol VA Posts: 33	One thing you may want to try is make sure none of your speakers are grounding out. Some decks have built-in protection to shut off the decks out put so as not to fry it. A easy way to do this is remove your radio, find your ground wire. Get a multi-meter and set it to continuity. Put one probe on your ground wire and go through each speaker wire. If one makes a noise, that is the wire that is grounding out. I would check that first before getting a new deck. Hope this helps.