SUBSTROBE SYNC WIRING

Firing a non TTL substrobe

Firing a Non-TTL Substrobe through a Nikonos III connector
Basic wiring needed for building a non-TTL terrestrial strobe housing

Wiring diagram of YS50/YS60-TTL-N (Nikonos) strobe sync cord
Ikelite Substrobe Sync Wiring

CAUTION:
The information shown here is published 'as is' and it's intended for educational purposes only. I can give any warranty that all this stuff it's correct and I can be wrong in some aspects, so if you use this information, you do it at your own risk.
I remember you too, that inapropiate manipulation of a strobe can produce serious damages in the unit, in the camera and even you can get injuried. And don't forget that you'll probably loose the warranty of the strobe and/or the camera. Don't do it unless you REALLY know what you're doing.

Firing a Non-TTL substrobe

FIRING A NON-TTL SUBSTROBE THROUGH A NIKONOS III CONNECTOR

Nikonos III plug	Firing Connection In order to fire a non-TTL (or to fire an TTL strobe without in manual mode) you only have to connect pins 2 y 3 of the Nikonos III plug. You can use a piece of wire or just a simple paper clip. Doing this could be useful for testing the strobe functionality if you don't have your Nikonos at hand or if it's loaded with film and you don't want to spoil any snapshot whith a test shot. This is the same that the camera does.

BASIC WIRING NEEDED FOR BUILDING A NON-TTL TERRESTRIAL STROBE HOUSING
Wiring of a terrestrial strobe If you wanna use a non-TTL terrestrial strobe unit with a Nikonos camera (or with a compatible housing) you need to know how you have to connect it to the camera. At least, in order to fire it. Besides, if you wanna use it underwater(sure it's what you want), you also have to build a housing for the strobe unit. You'll need for the wiring the following hardware: A male Nikonos III connector (no-TTL). A current strobe hotshoe with it's own wire (of the kind of hotshoes used for getting away a manual strobe from the camera). A wire with two inner threads and a valid external diameter for the Nikonos connector (it can have three inner threads, but here we are only discussing about the minimun wiring to fire the strobe). A wire sealing device for the wire (if you are going to build a housing for the strobe) Supposing that the inner wires are coloured red and black, you have to do : Unmount Nikonos connector Weld the black wire in the internal side of the pin numbered 2 and the red wire in the pin numbered 3. Mount the Nikonos conector and verify that everything is correct (Check that weldings are strong enough to avoid getting the wire released accidentally and review any potential leak points). Pass the wire through the sealing device (If you don't do it now, perhaps you couldn't do it after). Cut the hotshoe wire by the strobe connector end and peel the two resulting wire ends. Using a polymeter, find which wire is connected to the side guides of the hotshoe and which one is connected to the central pin. Connect the black wire to the hotshoe side guides wire, and the red wire to the hotshoe central pin wire. Connect the hotshoe to the strobe unit. Check it in the way we discussed in the previous point.
NOTE ABOUT TTL STROBES AND/OR CAMERAS: Everything discussed here is also valid for TTL strobes and cameras used in manual (non-TTL) mode.

Wiring diagram of the YS50/YS60-TTL-N strobe sync cord

WIRING DIAGRAMS OF THE SEA & SEA YS50/YS60 TTL STROBE UNIT WITH NIKONOS MOUNT

Nikonos V plug

WIRING DIAGRAM

Nikonos Pin	on-board plug pin YS50	wire color (most probable)
1	R	red
2	G	green
3	B	blue
4	Y	yellow
5	W	white

Internal on-board connector

Ikelite Sync Cord Wiring Diagrams
This is an original FAQ from Ikelite and it's reproduced here with their permission.
	The original faq is located at the Ikelite website.