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Offline JS29

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Re: Colored wiring diagrams - 70 Cuda/Challenger
« Reply #30 on: May 18, 2020, 08:06:35 AM »
@soccernut43  It's a voltage suppressor to operate gauge's like temperature and fuel.  :alan2cents:   

Offline soccernut43

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Re: Colored wiring diagrams - 70 Cuda/Challenger
« Reply #31 on: May 18, 2020, 08:13:12 AM »
Thought I saw a capacitor up there when looking from the floor up to the top of the back of the dash. Yeah, something else to check out lol.

Offline jamesroney

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Re: Colored wiring diagrams - 70 Cuda/Challenger
« Reply #32 on: May 18, 2020, 10:24:31 AM »
Please note that the wiring schematic from the OP is NOT for every 1970 Challenger.

It is only for the 1970 Challenger with the Ralley Cluster.  There is a DIFFERENT wiring diagram for a Standard dash.
It is worth pointing out that the Osborne Book "1970 Dodge Challenger Wiring Diagram Manual" has only one "center section" diagram...and it is for the other (Standard) Dash. 

This is obvious, and well known by e-body experts.  But if you are a newbie to e-bodies...you will drive yourself CRAZY trying to figure out why the diagrams don't match.

It gets harder when the alternator goes full field, and pushes 100 Amps thru the gage cluster before the bulkhead connector catches fire, and the ignition switch connector melts.  Then someone "fixes" it and tapes it all up.

Please don't ask why I know this...
BS23N0E and a JH27G0B

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Re: Colored wiring diagrams - 70 Cuda/Challenger
« Reply #32 on: May 18, 2020, 10:24:31 AM »

Offline soccernut43

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Re: Colored wiring diagrams - 70 Cuda/Challenger
« Reply #33 on: May 18, 2020, 10:29:57 AM »
LOVE the old school Simpson Analog meter. Used to just keep one around to visually see the needle when checking capacitors.

Offline soccernut43

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Re: Colored wiring diagrams - 70 Cuda/Challenger
« Reply #34 on: May 18, 2020, 10:45:26 AM »
I had planned on using the original wiring harness.  I've had the car stored indoors.  I've had the complete wiring assembly apart.  It doesn't look back and the actual wiring seems to be in good shape.  I'm torn between using the original harness and possibly bypassing the amp meter gauge, possibly getting the headlight circuit off the original wiring, and doing the same with the alternator, making connections for it on the starter relay.  Course I don't want to see my car go up in flames either.   

Offline shawge

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Re: Colored wiring diagrams - 70 Cuda/Challenger
« Reply #35 on: May 22, 2020, 08:58:08 PM »
OP here.  Had some free time to work on adding color to the 70 Challenger standard dash wiring diagrams
1970 Challenger, 451 MS3Pro EFI
Colored wiring diagrams
Wheel spreadsheet

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Re: Colored wiring diagrams - 70 Cuda/Challenger
« Reply #35 on: May 22, 2020, 08:58:08 PM »


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