I found a Bakatronics BK-702 kit but no directions for either what its for or assembly. I went to the Bakatronics web site but nothing showed for it Any ideas???
Well, if it were a BK-102 it would be a lighting circuit to represent someone welding. 1’s and 7’s can sometimes look alike. Does what you have look like what is shown for the -102?
No. It is definitly BK-702.
OK there is a BK-702 it is the pc board for item BK-201 emergency vehicle flasher
Not a very good picture but it is marked BK702
https://www.bakatronics.com/shop/item.aspx?itemid=716
Here's what it is capable of doing:
Nine Selectable Pattern Modes:
1: Emergency Flasher 1. Rapidly Strobes 4 LEDs 4 times then the other 4 LEDs 4 times. Great for Police, Fire Ambulance, Etc
2: Emergency Flasher 2. Faster Strobes of 4 LEDs 3 times then the others. Police, Ambulance, Fire, etc
3: Random flasher. Flashes LEDs in a random sequence
4: Lights up LEDs 1 thru 8 until all are lit. Then all off and repeat
5: Lights up all LEDs then turns them off one at a time from 8 to 1, then repeat
6:Alternating Flasher. Slow alternates flashes between LEDs 1-4 then LEDs 5-8. Use for RR crossings, Police car headlights, barriers etc.
7: Stobing Alternating and pulsing. Used for police light bar (see video)
8: Strobing and pulsing 2, Used for Model police cars light bar and wig wag headlights (see video)
9: Strobing pulsing 3, Used on police and construction or mantainence vehicles (see video)
There is also a YouTube video which may be helpful:
https://youtu.be/KskMW1Uc5PU