Mark C 65SS
Forum Newbie
Posts: 74
Loc: Melbourne Australia
Reg: 01-20-12
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06-29-12 09:08 PM - Post#2242828
Hi Guys
Hoping someone can help me, i purchased one of those old style custom autosound radios USA-630 when i wire up the radio + wire to the switched fuse on car & the fulltime + for station memory it's ok then when i start the car but the car will not stop when the key is turned off unless i disconnect one of the + radio wires ???? i'm confused everything is wired as per the radio manual but im doing something wrong any help would be appreciated Cheers Mark
Edited by Mark C 65SS on 06-29-12 09:10 PM. Reason for edit: No reason given.
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 427SS65
"9th Year" Platinum Supporting Member & Moderator
Posts: 12275
Age: 67
Loc: St. Louis, MO
Reg: 12-11-03
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06-29-12 10:36 PM - Post#2242839
In response to Mark C 65SS
Somehow the radio's memory connection is keeping the ignition coil alive after the key is turned off. You probably need a diode in that circuit to isolate the radio keep alive circuit from the ignition.
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 62chevy427
"7th Year" Silver Supporting Member
Posts: 1499
Loc: laurens sc
Reg: 04-13-06
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06-30-12 08:08 AM - Post#2242906
In response to Mark C 65SS
make sure to wire the radio so that the (+) that runs the radio,not the memory wire, is connected to a terminal that has power only in the RUN position. the memory wire should be connected to full time power.
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Mark C 65SS
Forum Newbie
Posts: 74
Loc: Melbourne Australia
Reg: 01-20-12
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06-30-12 11:21 PM - Post#2243186
In response to 427SS65
Hi Tom,
Thanks for your suggestion it looks like It already has a small sealed dioade in the fuse box that came already wired to the radio
I had another look today still no clearer anyway I'll keep trying and let you know if I sort it out
Cheers Mark
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Mark C 65SS
Forum Newbie
Posts: 74
Loc: Melbourne Australia
Reg: 01-20-12
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06-30-12 11:27 PM - Post#2243188
In response to 62chevy427
Hi yep have wired it that way so as a check i disconnected the + for the memory turned the the radio on then made sure it turn off with the key & it does so no issues there, it's a funny one
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65ragtop
Member
Posts: 209
Loc: Sacramento, CA
Reg: 04-04-03
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07-08-12 03:47 PM - Post#2245805
In response to Mark C 65SS
Are you running a stock ingnition setup? If not what type and where is it wired into?
Are the fuse box and wiring harnesses on both sides of the firewall original? What kind of shape are they in?
Where did you tap the power from, the fuse box spades or splicing a wire?
This is obviously a short, or better defined as a crosswire fron the radio wires to the ignition, just a matter of finding where.
| "One often finds the road to his destiny on the path he chooses to avoid it." - Oogway |
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Mark C 65SS
Forum Newbie
Posts: 74
Loc: Melbourne Australia
Reg: 01-20-12
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07-09-12 02:42 AM - Post#2245980
In response to 65ragtop
Are you running a stock ingnition setup? If not what type and where is it wired into?
Are the fuse box and wiring harnesses on both sides of the firewall original? What kind of shape are they in?
Where did you tap the power from, the fuse box spades or splicing a wire?
This is obviously a short, or better defined as a crosswire fron the radio wires to the ignition, just a matter of finding where.
Hi 65 Ragtop,
Originally tried with factory wiring but as the engine bay harness was a bit tired i decided to fit a new American Auto wire engine bay harness with HEI which was rewired to the key switch & fuse box as recommended in drawing.
The fuse box is in reasonable condition and connection plugs look good, connected the radio + through a spade connector directly on the fuse box the + for the memory ran ditectly to main feed on regulator (battery side) have tried a few points for this with same prob's, tried fitting a diaode on the memory + side as Tom suggested but still an issue it's got me stumped.
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