Code3 SD NIGHTPROBE
- Thread starter Cxp20338
- Start date
Taking the old style rotators off isn't bad. I think it is easier than "working under them". If it is a full nite probe you probably want to see each contact point as well as the main power contacts anyway.
This is a wire under the tray going directly to the rotator assembly. It obviously got hot, and is potentially shorting out. Can the rotators be removed without removing the bulbs?
I think no!
To get to the brushes, the lamp holders have to be removed. If you have to go directly to the cables under the plate, then this plate must also be removed.
I'm currently working on an SD with Nightprobe and SelectAlert. Maybe these pictures will help you a bit:
Could you please take some detailed pictures of wiring at the terminal block? Unfortunately, there was not much left of the original wiring on my SD, so I have to completely reconstruct it.
Yes, you only have to loosen the drive belt and remove the Pin (red arrow) - then you can remove the lamp holder together with the bulbs.
Can you tell me (and maybe also take some pictures) what is attached to the top of the lamp holder (blue circle)?
The dual filaments are GE 4454. Here are some pictures.
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Take note, my bar appears to have fewer options than yours. I only have electrical contacts on the two outboard rotators. The front cutout is misleading. I believe mine only has the alley function.
Right, without brushes on the inner rotator it is "only" a standard one.
Do you have a Nightprobe controller? If not the following Patent with a (schematic) wiring diagram would may be helpful.
US4058794A - Vehicle beacon control system - Google Patents
A vehicle light control system for emergency and patrol vehicles equipped with emergency recognition rotating beacons in which the beacons are provided with side-facing flood lights for illuminating areas at one or both sides of a vehicle to provide means to observe conditions in the side areas...
patents.google.com
The combination of Nightprobe and SelectAlert Rotating Pods (rear only) makes the wiring many times more complicated.
Thanks for the pictures! They show me some details - that are missing at my SD.
The 4 number digit is 7740. It's hard to see it. I do not have a controller, but I'm trying to get my hands on one.
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What size cotter pins are used? I'm going to the hardware store in the morning to get new ones, and begin the teardown.
Let me know if you are able to locate more diodes. I wasn't able to find anything with those numbers. Think one on my bar is bad.Mostly the old ones can be reused.
I will use 1x20mm or 2x25mmI guess that would be 1/16 x 7/8
Sorry to cut in on this post,,, but I thought a NightProbe was a spotlight system for the MX7000 and the like. Please educate me!
Nightprobe was a very early option for code3. It was similar to select alert in that it offered takedowns, and alleys on bars. They were NOT common at all, less so than selec alert. Finding an Nightprobe bar is almost like finding a unicorn. Just happened upon mine through sheer luck, and a friend who instantly recognized what it was.
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Looks like the diode has part number "1N1199" (I believe the 7704 is manufacturer's date code i.e. 40th week of 1977). This diode is rated to handle 12AMPs up to 50 volts according a datasheet I found.
Hope this helps
Unfortunately, I haven't been able to find one yet, so I'll have to find something similar.
Do you know what kind of light cone the 4454 produces? Is it a flood, spot or something in between?
Could you maybe take a picture of how it looks on the wall?