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ContinuousWave: Post-Classic Whalers
170 Montauk: Navigation Lamp Not Burning
|Author||Topic: 170 Montauk: Navigation Lamp Not Burning|
posted 08-12-2013 08:50 AM ET (US)
I'm trying to diagnose a problem with my navigation lamps. My all-round lamp works in both switch positions (second and third) that it should, but my [combined sidelight lamp] doesn't work. The lamp is brand new; the old lens was cracked. I'm not getting power to the lamp. If the wire is the problem, can I just pull new wire through the tunnel to it? Or, is the wire molded into the hull?
posted 08-12-2013 08:29 PM ET (US)
You should be able to pull it through.
posted 08-13-2013 01:29 PM ET (US)
I think the front rigging tunnel is closed out. That means it is filled with foam and wire is stuck in there. You need to figure out a way to get the wire loose from the foam or need to run another wire somehow.
I would put a tester first and test if you do have power when switched on, do that at both at bow and in behind the switch. I would hate to rip out the wire then find out it was the switch.
posted 08-14-2013 07:43 AM ET (US)
Well, luckily I didn't have to replace the wire. My [combined sidelight lamp] wasn't working and I had the common cracked [lens] syndrome. I got a new assembly from Twin Cities and replaced it but it still didn't work. I tested for power at the lamp with the switch on, but nothing. My next thought was the switch itself. I did a continuity test from the switch to the terminals on the lamp, but still nothing. I thought that maybe my problem might be one or both of the butt splices from the wire in the hull to the lamp wiring; there's a big difference in wire size, by the way. I cut off the butt connectors and did another continuity check and the wires in the hull were good. I re-did the butt splices, and I once again have a [working combined sidelight lamp].
posted 08-14-2013 09:10 AM ET (US)
Glad you found your problem. It would be most unusual for a wire running through an undisturbed location to just "break".
posted 08-15-2013 10:22 AM ET (US)
[Update] It sounds like the splice connnections were at the bow near the lamp. Perhaps water got into them. Were the splice connectors the type with a heat-shrink overwrap of the splice?
posted 08-16-2013 07:33 AM ET (US)
Yes, the butt splices were the heat shrink type. There could have been a couple possible [electrical problems] here:
--the wire size difference between the wire coming up through the hull, and the wires on the light is significant;
--the butt splices were both bent almost 90 degrees to get them down in the bow chock.
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