70 up charging system upgrade question

70 up charging system upgrade question

So had a few minutes tonight after work.
I rigged my negative lead on meter direct to battery -ve.
I made 2 jumpers, 1 from batt(red) and 1 from ign1(2 blues)
I also have 2 switches.
Battery static 12.32 V
Results
Original switch
Key off 12.10 V at red battery
Key on 11.34 V at red battery
Key on 11.18 V at Blue ign.
0.20-0.16V drop. Looks minor to me thru switch, but red wire has 0.76 V drop?
Spare switch
Key off 12.02 V at red battery
Key on 11.30 V at red battery
Key on 11.12 V at Blue ign.
Similar results as original switch? Drop in red wire of 0.72 V.
I'm thinking the problem lies in the circuit I've taken a pic of.
Also posted pic of ign switch with jumpers.
Thanks all.

67Dart273 said
No just the immediate path. Dont worry for now about start, accessory, etc, you are "going down one road" at a time. Power through the switch to ignition.....just two wires. What you are trying to determine, is "the drop" inside the switch, or right at the terminals of the switch/ connector? I have found at least two, over the years, where the CRIMP itself at the terminal was the problem. This is difficult to get to but THINK of them as each a separate part

This may be a poor example. What I'm trying to get at is wherever the drop changes "a lot" is right where the problem is. As you move one way or the other with your probe along that path, wherever the drop "is" will change the reading