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1971 Dart, L6, auto, 2Dr- need diagram for fuse block.!
From the 71 service manual This came from MyMopar and does not use the 'dash' page numbers, so fuse index page 346, it's actually a Plymouth manual
Wiring diagram index is page 368. Instrument panel wiring for "standard cluster" is page 381, 382
Look at the bottom of your fuse panel. It will look exactly like the diagram. The three connections on the top left, all hooked together is power coming INTO the fuse panel from the KEY. This is "switched accessory" power, in other words, the three fuses on the left are only live when the key is in "run" or "accessory"
The next middle two on top, connected together ARE ALWAYS HOT. This is power coming INTO the panel from the ammeter direct, and is for stuff like brake and tail lights that do not go through the key
The far right fuse "is a trick." It will ONLY have power when............
the tail fuse is good
the headlight switch is in either park or headlights
the dash dimmer control is turned "somewhat left"
All three of the above must be "true"
With the fuse powered, all dimmer controlled dash lamps are fed out the bottom of the fuse on orange wires.
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Brake lights INOP but turn signals, hazards, and reverse OK.!
Acess the brake light switch. One wire should be hot at all times. Depress the brake, the other wire should be hot. If this is the case, access the turn signal switch connector where that wire enters the steering column and make sure you have it there
This is page 382 in the manual, find the steering column and the long connector with a "point" on one end. The white wire at the "point" end is your brake light switch power. If you have it there and the lights do not work, the trouble is in the turn signal switch
. Temp and fuel gauge INOP but Speedo and Alternator gauge OK.
Most "glaring" possibility is indeed the instrument regulator. You have a "non" Ralley dash, that is, no oil gauge? Then it plugs into the rear of the panel. A long rectangular box about 1 1/2" or so long by 3/4" or so wide
I know about the "instrument cluster voltage regulator" that controls fuel and temp gauge so I've yet to check that (don't know how yet).!
A quick fast check is to get under the hood, access the temp sender wire, and ground the wire with a clip lead. Turn the key to "run" and watch the gauge. It should immediately head for the "hot" side.
There are about 3-4 wires from fuse block that lead to loose wires and behind cluster there are many electrical plugs not connected. ANY IDEAS OR HELP WILL BE APPRECIATED. THANKS!
Best way is to photo or at least describe the connector. And notice the wire COLORS. This becomes fairly easy to run down on the diagram, again, page 381 or so in the manual
Here are two examples I cropped from the diagram. Look at the plugs, the SHAPE, and the wire colors. Examples, the two pin "L" shaped plug is for the flasher. There's a second one for your 4x flasher, but it will have different color wires. Notice the radio plug. It's "T" shaped, 2 pins, and ID'd by the wire colors. The orange wire is always for dash lights, and the radio has a pilot lamp