Today's Message Index:
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1. 08:35 PM - Weird power . . . (Gary L Vogt)
2. 09:00 PM - Re: Weird power . . . (Linn Walters)
Message 1
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| Subject: | Weird power . . . |
I'm troubleshooting Cabin and Map lights not working. -=0A=0AFirst thing
I notice is the fuse is blown. -Replaced the fuse. -Nothing.=0ANext, th
e lights are burned out. -Replaced the lights. -Nothing. -=0AI remove
the plastic cover on the switch. -The power wire, 51LA3, is connected to
the map side of the switch, not the middle.=0A- --- fixed that. -Not
hing.=0AChecked for power at 51LA3 with the switch off. -12.5 volts.=0ATu
rned on Map, then Cabin light. -Nothing. -=0AMeasured power on 51LA3 wi
th switch on Map. -0 volts. -=0AChecked the fuse. -Blown. -Replaced
. -Still nothing. -=0AI disconnect all of the wires. -I have power on
51LA3. -=0A- - -I connect it directly to the cabin light wire, no. 5
LA5. -Nothing.=0A- - -I connect it to the map light, no. 5LA4. -Not
hing.=0AI remove the wire to the side light, powered by the rheostat, wire
no. 51LB6.=0AI connect 51LB6 to 5LA4. -Map Light works.=0AI connect 51LB6
to 5LA5. -Cabin Light works.=0AI connect to the middle terminals on the
Cabin/Map switch. -Lights work.=0AI measure power on 51LA3. -12.5 volts
. -=0AI connect 51LA3 to the side light. -Nothing.=0ADouble check power
on 51LA3. -12.5 volts.=0AI leave the VOM on the 51LA3 measuring 12.5 vol
ts. -While connected, I attach the side light. -Voltage gradually drops
to 0 volts.=0A- - light never comes on. -Double check with Map and Cab
in lights. -Same.=0A=0A----->>>>> -With the voltage on 51LA3 measuring
12.5 volts, any attempt to load the circuit with a light drops the voltage
to 0 volts.=0A=0AFuse is good. -Power is there. -Doesn't work when ligh
t attached.=0A=0AThis is a new one to me. -=0A=0APS, I checked the connec
tion on the battery box fuse holder. -It looks OK. -Clock works fine.
Message 2
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| Subject: | Re: Weird power . . . |
Not having a diagram to follow the steps below .... here's a WAG.
I suspect that you're missing a ground and the voltage you're measuring
is being back-fed somewhere. Check the side light ground.
Linn
On 11/16/2013 11:29 PM, Gary L Vogt wrote:
> I'm troubleshooting Cabin and Map lights not working.
>
> First thing I notice is the fuse is blown. Replaced the fuse. Nothing.
> Next, the lights are burned out. Replaced the lights. Nothing.
> I remove the plastic cover on the switch. The power wire, 51LA3, is
> connected to the map side of the switch, not the middle.
> -- fixed that. Nothing.
> Checked for power at 51LA3 with the switch off. 12.5 volts.
> Turned on Map, then Cabin light. Nothing.
> Measured power on 51LA3 with switch on Map. 0 volts.
> Checked the fuse. Blown. Replaced. Still nothing.
> I disconnect all of the wires. I have power on 51LA3.
> - I connect it directly to the cabin light wire, no. 5LA5. Nothing.
> - I connect it to the map light, no. 5LA4. Nothing.
> I remove the wire to the side light, powered by the rheostat, wire no.
> 51LB6.
> I connect 51LB6 to 5LA4. Map Light works.
> I connect 51LB6 to 5LA5. Cabin Light works.
> I connect to the middle terminals on the Cabin/Map switch. Lights work.
> I measure power on 51LA3. 12.5 volts.
> I connect 51LA3 to the side light. Nothing.
> Double check power on 51LA3. 12.5 volts.
> I leave the VOM on the 51LA3 measuring 12.5 volts. While connected, I
> attach the side light. Voltage gradually drops to 0 volts.
> - light never comes on. Double check with Map and Cabin lights. Same.
>
> ----->>>>> With the voltage on 51LA3 measuring 12.5 volts, any
> attempt to load the circuit with a light drops the voltage to 0 volts.
>
> Fuse is good. Power is there. Doesn't work when light attached.
>
> This is a new one to me.
>
> PS, I checked the connection on the battery box fuse holder. It looks
> OK. Clock works fine.
> *
>
> *
>
> No virus found in this message.
> Checked by AVG - www.avg.com <http://www.avg.com>
>
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