Author Topic: 79 CoupeDeVille dipper switch  (Read 72 times)

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Offline cad425

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79 CoupeDeVille dipper switch
« on: October 30, 2021, 01:58:49 PM »
Hi guys:
Coming back from Mudgee in May, high beam failed because the dipper switch didn't. Dip that is.
Ive finally had time to pull it out and look at it - and it dips fine. I don't think its the connection at the dipper, its the connection further up the loom - which is hard to get to of course - which seems to have a strange triple system with the central one (yellow) the provider of power, and the other two on either side high or low beam.

I think I need a new connector, if anyone has an old loom. Of course, I can cut it all off and do a direct connection with solder - any comments or advice welcome?
1979 Coupe DeVille 425 - project since Jan 16
2006 Fairmont V8 - gone to a good home
1996 E220 Cabriolet - for sale, replaced  by...
2013 E250 Cabriolet

Offline Bruce Reynolds

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Re: 79 CoupeDeVille dipper switch
« Reply #1 on: October 30, 2021, 03:27:53 PM »
G'day John,

Firstly, does your car have Auto-headlight dimming?

Plus, now you are back home, do the lights dip now? using the Dip Switch? or do you have to manually operate the wiring connections with the dip switch removed?

The wiring isn't too hard to trace, if you can get the headlight switch out, and use a multimeter to check.

Bruce. :devil:
Bruce Reynolds, Lindisfarne, TASMANIA
'72 Eldorado Convertible (LHD)
'70 Ranchero Squire (RHD)
'74 Chris Craft Gull Wing (SH)
(Past President Modified Chapter)

Offline cad425

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  • Although optimistic - that fuel line is a worry!
  • Location: Sydney, NSW
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  • My Name: John
Re: 79 CoupeDeVille dipper switch
« Reply #2 on: October 31, 2021, 12:45:27 PM »
Hi Bruce - no, they didnt work.
On closer inspection of the second connector - the first is on the dipper switch - I can see that one side of the connector has melted plastic. Obviously has failed. Of course, its the connector quite hard to get to. I have some 20A blocks and will replace that connector. But it will kill my back to be under the front seat working 'up'.
1979 Coupe DeVille 425 - project since Jan 16
2006 Fairmont V8 - gone to a good home
1996 E220 Cabriolet - for sale, replaced  by...
2013 E250 Cabriolet

Offline Bruce Reynolds

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  • Posts: 1325
  • Location: Lindisfarne.
Re: 79 CoupeDeVille dipper switch
« Reply #3 on: October 31, 2021, 04:50:50 PM »
John,

What connector are you referring to as the Secondary Connector?

If you can take a picture of it, I may have a spare connector here.   I throw nothing out.

BUT, melted electrical parts are of great concern, as there should not be such heat to melt stuff.

Are you running standard headlights, or high-output ones?, as in high current draw.

You may have to do what i do, and install relays, so that the switches are just that, and not high current areas.

Bruce. :devil:
Bruce Reynolds, Lindisfarne, TASMANIA
'72 Eldorado Convertible (LHD)
'70 Ranchero Squire (RHD)
'74 Chris Craft Gull Wing (SH)
(Past President Modified Chapter)