Yes many will say burn it down.    Chasing electrical problem.  No help from Manufacturer and so far closest dealer.   Question for now the A-B switch to stroke manually should I be losing voltage on switch ? 13 plus going in have terminals at 6.4ish and terminals at 4.3 v.     I believe normal stroking signals go through switch also.   Can not turn pump on at all.     Have a spare black-box also.   Have had this pump for about 10 years.

Looking into putting a different pump control system on this. Just pump not boom,   Any advice?