I wanted to check the charge in both batteries at No 1 and No2 charge sockets ,a plug with tails was made up .( test lead)
Test 1 , plug into No1 charge socket ,volt meter connected to the tails .
Result ,a reading of 12.82 volts .
Test 2 , plug into No2 charge socket ,volt meter connected to the tails.
Result , a reading of 00.00 volts.
Test 3 , check continuity between charge socket No 2 and battery plug No2 .
Result , continuity on both centre pin on socket to + red on battery plug ,
No continuity on outside of plug to - black on battery plug .
Never assume ,so tested plug with tails .(test lead)
Result ,centre tested ok ,outer tested ok.
Test 4 , without using test lead . Test No 2 socket to No 2 battery.
Result ,continuity between centre pin on socket + red to + red on battery plug ,and continuity on - black on socket to -black on plug .
Test 5 ,check continuity between - black on sockets No 1 and 2 back to P102 .
Result , all ok .
Test 6,set up battery charger,using test lead into No1 socket No 1 battery was showing 12.82 volts at No 2socket showing no connection to battery .
My conclusion is that when the test lead is plugged in to No2 charge socket it looses its -black .
The question is I suppose is there a socket that when a plug is inserted that it disconnects , when I built up the circuit I noticed on the base there was 3 connections when I tested them 1 was centre pin + the other 2 were return/ - neg / 0 volts . So I just connected one of the pins .
Sorry for being so long winded but it's the only way I can make some sort of sense out of it .
Thanks for the help
Regards
David