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Wire for radio
#1
I'm installing a slidebad radio and it needs a key on, constant, and ground. In my radio area I have one plug that I cant figure out. the two combined purple/white seem to be a key-on. the blue/red has 1ohm resistance to ground so I don't know what that is or if this plug it for the radio? Any help would be appreciated.

[Image: 20170227_162728.jpg]

- Jim
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#2
See page 5

https://www.7173mustangs.com/images/1973_full.pdf

I'm not great at reading wiring diagrams, but it looks as if the light blue with red is back lighting maybe?? (IE comes on with lights)

73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

- Jason


[Image: 082-hot-rod-power-tour-2017-1970-1970s.jpg]
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#3
(03-01-2017, 05:55 PM)73pony Wrote: See page 5

https://www.7173mustangs.com/images/1973_full.pdf

I'm not great at reading wiring diagrams, but it looks as if the light blue with red is back lighting maybe?? (IE comes on with lights)

I checked for voltage and light blue with red comes on with light switch. I don't need that I guess. Before I hack up the plug I was hoping to make sure is is meant for the radio. Anyone else know for sure?

Also, I need a constant. Take it off the fuse block I guess?

- Jim
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#4
Fuse block or if your car has wiring for a console clock that plug has three prongs on it. Constant, lights, and ground.

73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

- Jason


[Image: 082-hot-rod-power-tour-2017-1970-1970s.jpg]
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#5
Yes, that plug is ACC power (white/purple) and lamps (blue/red). Another good place to tap into battery power is the circuit breaker for your e-flasher and brake switch, or splice into the cigarette lighter (blue/white).

Let me check your shorts!
http://midlifeharness.com

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[Image: oldfart.png]
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#6
That is the connector for the radio power and light. The white/purple stripe wire is key on and runs through a 15 amp fuse in the fuse block that it shares with the emergency flashers, back up lights, and wipers. The light blue/red stripe wires are used for all dash lights that are dimmable.



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
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#7
thanks everyone!

- Jim
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#8
Very useful information! Smile

Waiting for spring and summer...
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#9
Ok, possibly dumb question about this.  The two purple/white wires that are for accessory power.  One provides power and the other completes the circuit to ground?  If yes, which is which?  Let me know.

Thanks!

Scott
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#10
(04-08-2017, 03:59 PM)BeerDontCount Wrote: Ok, possibly dumb question about this.  The two purple/white wires that are for accessory power.  One provides power and the other completes the circuit to ground?  If yes, which is which?  Let me know.

Thanks!

Scott

That's a negatory.  The other wire (blue/red) is lamp power for the radio.

Let me check your shorts!
http://midlifeharness.com

[Image: Flamicon2.jpg]


[Image: oldfart.png]
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