Instrument binnacle changes

Tor

Tor

Well-Known Member
I'm considering getting a spare LHD/KMH binnacle, and wanted to know if any changes were made to the S2 instruments that could complicate replacing any of them. The tacho I know about (this one is destined for SA anyway). My car is from 1973 (RVC tacho) and the binnacle in question is older (RVI tacho).

The next question is probably trickier. Both of the green indicator lights in the binnacle flash with the indicators on, not one at a time in a handed fashion as they should. I have no clue where to start. It's a bother, they are also pretty weak and can hardly be seen in daylight.

The car was LHD converted in 1976, in case there's a typical error of any kind that was waiting to be made?
 
Both of the green indicators will flash when the hazard switch is pulled out, so the spare binnicle displaying the same when you use the indicator switch,...hmmm. There are two flasher relays, do you have a wiring diagram Tor?

Ron.
 
Hi Ron,

It's my old binnacle that's doing this, the replacement has actually been ruled out since I posted.

Yes I do have a diagramme in the Repair Ops Manual, I'm just not great at figuring it out. I can see the items (58, 79 and 96-98) relevant. With my limited understanding I see the L and the R signals pass through the hazard switch, item 82. Would be easy if that had a short in it... :?:
 
Hello Tor,

Which wiring diagram are you looking at? The ones that I have don't match with the numbers that you have quoted... :?

There are two flasher units, one for the hazard lights and one for the indicators. If you pull the connection off the hazard flasher unit (ie the metal can inside the glove box) and then use the indicators, what happens?

Ron.
 
Tor said:
The next question is probably trickier. Both of the green indicator lights in the binnacle flash with the indicators on, not one at a time in a handed fashion as they should. I have no clue where to start. It's a bother, they are also pretty weak and can hardly be seen in daylight.
Click to expand...

Hi Tor

Sorry I didn't spot this sooner as I may have the answer. My car did exactly the same when I got it and the problem was a bad earth to the instrument cluster. There is an instrument cluster earth to the bulkhead inside the driver's side knee bin. If it's making a poor contact the indicator lights take an alternative path to earth through each other, making both flash when you select either direction. Give it a clean and see if it helps.

See this topic

Dave
 
Dave, that one I'll definitely check. Thanks!

Ron, I'll check that one too and report back with what I find. Today the rear suspension rebushing job is afoot! Finally! :D

I've uploaded a quick scan of the schematic here:
 

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Hi, another possibility is the hazard switch. The contacts get dirty and don't
make contact properly and it maybe that you have knocked it when fitting
the dial assembly. All you have to do is work the switch in and out a number
of times, with or without switch cleaner. I have had wierd and wonderful
problems in the past with these.

Colin
 
Hello Tor,

Thanks for posting the schematic diagram that you were referencing. I was looking at the correct suffix, but as your Rover is LHD I was reading from that one, which is different to the RHD diagram that you posted.

You have some avenues to check, so hope one is a winner... :)

Ron.
 
I think I have a spare hazard switch and can get others if need be, so that's definitely on my list to check. Thanks Colin.

Ron, since this car was converted from RHD I assume the loom remains the same or the differences to this part of the electrics will be minimal? I know making assumptions can be unwise...
 

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Just an update: I've tried connecting a spare hazard switch, but no change at all. I also noticed none of the binnacle indicator arrows come on when the hazards are running... :? All external lights work, and the flasher can goes plink-plonk but inside the car there's no visible sign that they're on.
 
Tor said:
:? All external lights work, and the flasher can goes plink-plonk but inside the car there's no visible sign that they're on.
Click to expand...

I also had this problem so my first thought was the bulb inside the hazzard switch so when I twisted the switch to undo it to check the bulb it begain flashing so must have been a bad connection possably worth a try :?: :?: :?: or I was just lucky on this occasion :shock:
 
Hello Guy,

Thanks, but I've checked the bulbs and connections previously, and two working switches are displaying the same issue in both the binnacle and the in-switch illumination.
 
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