early 110 dash wiring - Defender Source
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  #1  
Old May 27th, 2008, 07:16 PM
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Tony Brooks
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early 110 dash wiring

I'm starting to get everything in place to install the new gauges in the 110. In poking around, I realized that the ovular panel in the center of the dash, unlike an NAS 90, actually has 2 gauge-sized holes and one small one, maybe for a cigarette lighter (see attached photo). I pulled it off and found that there's fabric behind it with openings in the supporting material for 3 guage-sized holes.

In digging a bit more, I found four wires under the plastic cover that sits in the center of the shelf -- a brown, a red, a black and a red/white (see attachment).

So it appears that there may have been some sort of option for accessory gauges in the center panel, and I'm assuming that the wiring powered them. Does anyone have any idea what these wires would power and/or what might have originally sat in that space? I'm guessing clock and cigarette lighter -- flasher switch is on the other side of the steering wheel.

And no, I haven't checked the wiring diagram (that I don't have) and I resemble a monkey pleasuring a football in using a voltmeter, so I'm looking for the easier answer here.
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  #2  
Old May 27th, 2008, 07:35 PM
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Quote:
Originally Posted by Abrooks
I'm starting to get everything in place to install the new gauges in the 110. In poking around, I realized that the ovular panel in the center of the dash, unlike an NAS 90, actually has 2 gauge-sized holes and one small one, maybe for a cigarette lighter (see attached photo). I pulled it off and found that there's fabric behind it with openings in the supporting material for 3 guage-sized holes.

In digging a bit more, I found four wires under the plastic cover that sits in the center of the shelf -- a brown, a red, a black and a red/white (see attachment).

So it appears that there may have been some sort of option for accessory gauges in the center panel, and I'm assuming that the wiring powered them. Does anyone have any idea what these wires would power and/or what might have originally sat in that space? I'm guessing clock and cigarette lighter -- flasher switch is on the other side of the steering wheel.

And no, I haven't checked the wiring diagram (that I don't have) and I resemble a monkey pleasuring a football in using a voltmeter, so I'm looking for the easier answer here.
Tony on checking the early 110 part book I have the holes are for in left to right order, PRC3115 Oil temp guage (left), PRC 2970 Clock (middle), PRC3116 (4cyl) or PRC3122 (8cyl) Oil Pressure Guage (right)

I can scan and email you the page if you require it.

all the best
julian
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  #3  
Old May 27th, 2008, 07:57 PM
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Fantastic, thanks, Julian! So the next question is what do those wires do? I'm guessing red=constant power, brown=ground, and the others are . . . errm . . . ahhhh . . .
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Old May 27th, 2008, 08:06 PM
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One is unswitched power, one is ground. I think another-small gauge wire is switched power from the light switch for guage and clock lighting. Mine has the square clock and power outlet/lighter in two of those spots.
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Old May 28th, 2008, 11:12 AM
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Basic rover color codes:

Brown: constant power unfused
Purple: constant power fused
Black: ground
Red/white: dash illumination
Green: fused power switched
White: unfused switched power
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Old May 28th, 2008, 11:25 AM
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Thanks, Mike! What's red?
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Old May 28th, 2008, 11:55 AM
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to further elaborate

red is dash illumination

white is ignition 12v unswitched (i.e things that work only when the key is turned to ON- like ignition + on a petrol engine)

green is ignition 12v switched (things that work when the key is turned on but have their own switch- lights, wipers, etc


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Thanks, Mike! What's red?
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Old May 28th, 2008, 04:34 PM
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My truck originally had a Cig lighter, Rear wiper washer switch for the rear SW door and a clock in the middle...
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