SUCCESS !! Toyota 86120-89118 radio (which prong is power *see picture) (1 Viewer)

[Wadesters]

I have the pictured radio. Trying not to blow it but test it. I know the two prongs are for power. Can anyone tell me which one is power and which is ground? I looked at cooler mans schematic and still could not tell. Thanks..

 

[cruiserdan]

I don't recall specifically but I believe that with the radio in the off position you will have continuity to the chassis from only one of the two terminals. That one would be the ground.

 

[Engineer8000]

The top T shaped connector is the power. All the old Panasonics I've seen had the negative or ground on the horizontal tab. A lot of times you will see a single connection to the vertical tab (+) and nothing on the horizontal tab since the radio is grounded by the mounting. Easy to verify with a meter as @cruiserdan stated. The bottom three terminals are speaker connections, the horizontal tab is common or ground.

 

[1969FJ]

The top T shaped connector is the power. All the old Panasonics I've seen had the negative or ground on the horizontal tab. A lot of times you will see a single connection to the vertical tab (+) and nothing on the horizontal tab since the radio is grounded by the mounting. Easy to verify with a meter as @cruiserdan stated. The bottom three terminals are speaker connections, the horizontal tab is common or ground.

If it is just 12volts and ground, only 2 tabs would be needed. Why 3 ?

 

[cruiserdan]

The 3 prong is for the speakers.

 

[1969FJ]

The 3 prong is for the speakers.

I misread the post indicating the top connector. Now makes sense.

 

[Wadesters]

Thank you

 

[Dynosoar]

I am 90% sure this is correct.
Don't hold me responsible, please.
Dyno

 

[Wadesters]

Tested Working!! Thanks all for the help

 

[CruiserWil]

@Wadesters--so, to confirm, Dynosoar's photo of the connections is correct, including the speaker connections?

 

[Wadesters]

Yes, connections worked for mine