Author Topic: dash lights rheostat  (Read 4968 times)

jmbour

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dash lights rheostat
« on: April 16, 2013, 08:48:27 »
I have no dash lights and I suspect the rheostat.
After reading the tech manual I decided to follow the instructions to bypass the rheostat by joining pins 5 and 6 of the under dash 12 prung connector.
 I looked under my dash : there are 3 "boxes" attached to the bracket, and a  "cylinder".
I presume the "boxes" are connectors. There is one on the upper side of the bracket (say #1) and two on the lower side : the closer to the driver(#2) is slightly different from the others, and brown, the #3 (between #2 and the cylinder) is identical to #1.
I know it is an easy procedure, but understand that for some it resulted in a blown #7 fuse and a shortcut.
So, as I don't want to make any mistake, I would appreciate if somebody could indicate clearly which is the correct connector.
Regards,
JMB

1971 280SL US
1973 280CE
1987 300 E
2005 C230

Ulf

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Re: dash lights rheostat
« Reply #1 on: April 16, 2013, 08:59:23 »
As far as I remember, it is the box nearest the driver
1965 230 SL in silver (DB180)
1982 Land Rover Series III SWB
2008 Jaguar XF 3.0
2005 Mini Cooper

jmbour

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Re: dash lights rheostat
« Reply #2 on: April 16, 2013, 09:07:46 »
Ok, thanks.
I had already opened the two others, an, of course, they don't match the description.
So, I will try this one and hope I will find the correct cables (grey-violet and grey-blue)
JMB

1971 280SL US
1973 280CE
1987 300 E
2005 C230

jmbour

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Re: dash lights rheostat
« Reply #3 on: April 16, 2013, 12:43:23 »
Ulf, your were right : the correct connector is the box closest to the driver on the lower side of the bracket.
So, the last connector I opened was the good one.
On my car, (US 71 280SL), it is a Bakelite box, and the cover is fitted with 3 screws (instead of a "clip" cover on the other two connectors).
My dash lights are now working well, except for the upper right corner of the central cluster (I suppose a bad bulb), and the clock.
Is the clock light commanded by the rheostat, or is it independent ?

JMB

1971 280SL US
1973 280CE
1987 300 E
2005 C230

philmas

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Re: dash lights rheostat
« Reply #4 on: May 31, 2013, 12:39:06 »
AFAIK, the clock light is  on the same line as the dash lights, and thus connected to the rheostat.
Regards
Philippe from Paris
Euro '71 280SL manual 4sp

jmbour

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Re: dash lights rheostat
« Reply #5 on: June 07, 2013, 16:42:06 »
Thanks,
the clock light works, and everything is now OK
JMB

1971 280SL US
1973 280CE
1987 300 E
2005 C230