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post #1 of 15 (permalink) Old 11-12-2016, 05:04 AM Thread Starter
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Wiring Diagram

Hi all need to know where is the Earth for the Heaters and cruse control i think there both at the same point as both intermittent
Or a wiring Diagram would be really good a 1997 car
Pretty please Brian
Michael

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post #2 of 15 (permalink) Old 11-12-2016, 05:33 AM
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Hi Michael
you could start by checking the earth point in the inside lower a panel (kick panel) ,My diagram is for left hand drive so not sure which side ok
Mike

chassis 27650
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post #3 of 15 (permalink) Old 11-12-2016, 05:53 AM Thread Starter
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Done that on both sides Helped but still Not 100%

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post #4 of 15 (permalink) Old 11-12-2016, 06:17 PM
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Hi all need to know where is the Earth for the Heaters and cruse control i think there both at the same point as both intermittent
Or a wiring Diagram would be really good a 1997 car
Pretty please Brian
Michael
I believe you already have IETIS up and running and the wiring diagram is in there. As soon as IETIS opens click on the "PUBLICATION INDEX" link then look for "Workshop Manual Electrical 97 and onwards - TSD 6006" then look in Section 18 for Cruise Control.

Somewhere there must be a "grand, unified whole-car wiring diagram" but I haven't figured out the magic search term(s) to get that to appear. The various subsystems, though, are all there.

Brian

The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth.
~ Niels Bohr


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post #5 of 15 (permalink) Old 11-13-2016, 04:14 PM
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Hi Brian
i had alook for Michael the other day , could only see the cruise control diagram and then only the 2 A post earths.
Is there another diagram for the heater system?
Cheers
Mike

chassis 27650
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post #6 of 15 (permalink) Old 11-13-2016, 05:39 PM
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There are wiring diagrams for various specific sub-systems of the heating/air conditioning system in the Workshop Manual (TSD 5000) section C4 (look toward the end).

How the folks at Crewe ever decided that all wiring diagrams did not deserve to be included in the Electrical Workshop Manual I will never understand. It's fine to have some appear elsewhere as well, but they all should be in that TSD, but are not.

Brian

The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth.
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post #7 of 15 (permalink) Old 11-13-2016, 05:59 PM
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Hi

I also have had some experience with a couple of bad earth problems
Couldn't be bothered hunting the original ground points and simply set up new independent earth points.

Hope that helps

John

Rolls Royce
Silver Spirit
1991
chassis 34285
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post #8 of 15 (permalink) Old 11-13-2016, 06:07 PM
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I also have had some experience with a couple of bad earth problems
Couldn't be bothered hunting the original ground points and simply set up new independent earth points.
John,

It never ceases to amaze me how often these cars have issues that can be traced back to bad earth/ground problems. I'm with you in that if the actual original ground points are miserable to find, and you determine that a test work-around earth/ground point fixes the problem, that there's nothing wrong with turning that work-around into a permanent version of same.

I also will use this thread as another opportunity to emphasize just how much using electrically-conductive grease can help to prevent problems in the future. Any time you touch an electrical connection it's worth taking the time to clean it up and to apply electrically conductive grease before putting it all back together.

Brian

The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth.
~ Niels Bohr


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post #9 of 15 (permalink) Old 11-14-2016, 03:53 AM Thread Starter
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Good Morning
well i am going shopping to day to get some Earth wire and run it from the Battery all the way to the front and then when something starts to play up it can have a nice new Earth strap That way i should be able to elevate any problems
And yes Brian is correct Grease is King
Michael

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post #10 of 15 (permalink) Old 11-14-2016, 08:52 AM
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Both headlamp T connectors to bulbs were melted and turned out to be bad earthing high resistance obviously heated up connectors and melted the terminal blocks. new earth run to bodywork hey presto fixed no more problems

J

Rolls Royce
Silver Spirit
1991
chassis 34285
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