Greetings All,

I am curious as to where the red wire that is suppose to be from the acc going to rear of my radio comes from as it is not hot when the key is turned to the key number one position.


Thanks,

Charles

__________________
"Tell me and I will listen, Teach me and I will learn, Show me and I will accomplish, Involve me and I will succeed."
'84 300SD 256,000 Gold on Brown (Mileage Award)
'86 300E 246,000 Blue on Tan

Are you sure the red wire is for the acc? I know on my 190E....the acc wire wasnt red. Maybe you should try a different wire.

www.the12volt.com
do a search for your model and year. it will have that info.
good luck

__________________
Whether you think you can or cannot, Either way you're right!. by Henry Ford.

Greetings,

Tried to get on the 12volt forum, but of course you have to be a member before you can use the forum, unless I'm doing something wrong. As far as the correct wire color and what it is suppose to do, I think I'm correct on this one as there are no other wires left and the other one is definitely powered up all the time.

Thanks,

Charles

__________________
"Tell me and I will listen, Teach me and I will learn, Show me and I will accomplish, Involve me and I will succeed."
'84 300SD 256,000 Gold on Brown (Mileage Award)
'86 300E 246,000 Blue on Tan

here you go :

1986-93 Mercedes 300 Series Stereo Information
Constant 12V+ Red/White
Switched 12V+ Black/Yellow
Ground Brown
Illumination Purple/Gray
Dimmer n/a
Antenna Trigger White
Antenna Left Rear
Front Speakers 4" Dash
Left Front (+) Yellow
Left Front (-) Black
Right Front (+) White
Right Front (-) Black
Rear Speakers 5 1/4" Rear Deck
Left Rear (+) Red
Left Rear (-) Black
Right Rear (+) Green
Right Rear (-) Black

Hope this is what you were looking for.
All this information is from the www.the12volt.com database and I don't assume any responsibility for it's accuracy.

__________________
Whether you think you can or cannot, Either way you're right!. by Henry Ford.

here's the alarm/remote start info

1986-93 Mercedes 300 Series Security Information
Constant 12V+ Red Ignition Switch Harness
Starter Purple/White or Purple Ignition Switch Harness or from Console
Ignition Pink/Red or Pink/Black Ignition Switch Harness
Ignition 2 Pink/Yellow Ignition Switch Harness, Accessory 2
Accessory Pink/Green Ignition Switch Harness
Tach Black Or Gray/Yellow (-) At Coil left inner fender
Brake Switch Black/Red Brake Switch
Trunk Pin Black/Yellow (-) OEM Alarm Module Passenger's FootWall
Parking Lights Gray/White L And Gray R at Light Switch
Head Lamp White/Yellow Light Switch
Hood Pin Brown/Red (-) OEM Alarm Module Passenger's FootWall
Factory Disarm Green/Yellow (-) OEM Alarm or Driver's Kick Panel
Door Trigger Brown/ (-)F ,Brown/ (-)R at OEM Alarm right FootWall
Door Lock Green or Blue Driver's Kick or Pump under Rear Seat
Door Unlock Green or Blue Vacuum Door Lock System
Horn Wire Black/Yellow (-) Steering Column
Windows Up LF=Green, RF= Black/White
Windows Down LF=Black/Pink, RF= Black

All this information is from the www.the12volt.com database and I don't assume any responsibility for it's accuracy.

__________________
Whether you think you can or cannot, Either way you're right!. by Henry Ford.

Greetings All,

After removing the ashtray and also noticing that the glove compartment wasn't lit with the key in the acc position I investigated futher to find the entire problem to lay at the cigarette lighter where power continues to the glove compartment as well as the acc position for the radio. Kind of seems like British thinking for wiring but it made it all work again, so it's once again 100% working. Keep all this in mind when you track a no power item as in most cases a seperate wire carries power from item to item while another supplies power to each individual item.


Charles

__________________
"Tell me and I will listen, Teach me and I will learn, Show me and I will accomplish, Involve me and I will succeed."
'84 300SD 256,000 Gold on Brown (Mileage Award)
'86 300E 246,000 Blue on Tan