I bought a used Target/Threshold brand "Cheers" sign, however the power supply was missing.
The power supply was almost certainly a small battery pack. I am unsure about the operating voltage but I think it might be 5V. The lights use Edison/screw-in sockets with LED bulbs.
The sign has three strings of lights joined in series. The strings of lights use the same connector. The last connector, a pin connector/female, is where the power supply would connect. The connector is a small rectangular 2-pin wire to wire connector. It looks like this.
1 x 2 Pin Header
1 x 2 Pin Connector "Top"
1 x 2 Pin Connector "Bottom"
The most distinctive feature of the connector it the 2 raised half arrows on the "bottom" of the pin connector.
I do not have experience with electronic projects, but even I know I have seen it before. I just can not place it. After a good bit of searching I thought it was a type of JST connector. Unfortunately I could not find it on their website under either wire to wire or LED connectors.
The dimensions of the pin connector/female are as follows.
Width 5.65 mm
Height 4.75 mm
Depth 7.15 mm
Pitch @2.2 - 2.5 mm
My caliper blades are too big to fit inside the shroud around the pins to get an accurate measurement of the pitch.
Any help would be greatly appreciated.