Emergency Flasher Dash Light

[HarryD]

The light in my emergency flsher switch has stopped working. The flashers work fine as do all the other lights, just the light in the switch. I checked with my multimeter and found power to the socket but the ground was open. My electrical drawing shows the ground to be inthe same place as my other instrument lights and they appear to work just fine.

Any ideas other than a bad (NLA) switch assembly?

[timmy2]

The obvious is what we usually overlook...Is the bulb burnt out? It would show open if you measured through it.

[HarryD]

Originally Posted by timmy2

The obvious is what we usually overlook...Is the bulb burnt out? It would show open if you measured through it.

timmy2,

Good question. Yes I did check the bulb and even tried a known good replacement.

[RWebb]

check the relay and its connections

[HarryD]

Randy, The relay works. In fact except for the light on the dash, the e-flasher works fine,

[RWebb]

ok, then it has to be the circuit thru the light...

how is continuity achieved in the thing when you actuate it?

[timmy2]

Shootung from the hip without the prints here in Montana...
I believe a set of nomally open contacts are closed when you push the button and are latched mechanically. These contacts energize the flasher relay and then the relay opens and closes the contacts powering the lights. Maybe a wire from the flasher to feed the switch light fell off or is open internally.
Hope that makes sense.

[HarryD]

Originally Posted by timmy2

Shootung from the hip without the prints here in Montana...
I believe a set of nomally open contacts are closed when you push the button and are latched mechanically. These contacts energize the flasher relay and then the relay opens and closes the contacts powering the lights. Maybe a wire from the flasher to feed the switch light fell off or is open internally.
Hope that makes sense.

It makes sense and that is wahat I am thinking. Sadly. it means a new switch.

[fintstone]

Does the light on the switch come on with the headlights?

[HarryD]

Originally Posted by fintstone

Does the light on the switch come on with the headlights?

No, as noted above I have power to the light (comes on when the headlights are on or flasher is running) but no ground connection. I an thinking an internal failure as there are no apparent loose wires.

[fintstone]

The flasher bulb has two sources of power. One from the interior lights through a resistor to dim it and another through the switch from when the button is pushed in with no resistor (so it is brighter). Since it doesn't work either way, it is much more likely it is not the switch. You probably have lost the ground from pin 31 (brown wire)...either on the switch or where it connects. Take the bulb out and ohm pin 31 to ground or with the bulb in, run a short jumper between pin 31 and ground to test. The bulb should light with the headlights and /or pushed in.

[HarryD]

Got it working again. I found the ground star for the light, removed/reinserted the connector, VOILA! lights now work.

[fintstone]

Glad to hear. Would have bet that was the case.

[JJ 911SC]

Originally Posted by fintstone

The flasher bulb has two sources of power. One from the interior lights through a resistor to dim it and another through the switch from when the button is pushed in with no resistor (so it is brighter). Since it doesn't work either way, it is much more likely it is not the switch. You probably have lost the ground from pin 31 (brown wire)...

Next time I need electrical advise, you are it