Then I will get the batteries tested. Although they crank hard when they do. Changed the relay twice both new ones, and starter tested good. So I guess cables or batteries is first to check. Although I would rather just replace cables and batteries at this point and go from there. Since I live in the south can I just go to a one battery setup?
The simple answer to one battery is yes...it can be done...
However it's NOT recommended, I've used a single to fire a truck on occasion to proof fire it...before a purchase...but I don't recommend a single battery setup.
The loads can be significant and two batteries of equal size/age are best bet.
You said the main cables where replaced recently, whats RECENTLY?
Does grabbing the battery cables and wiggling them have any effect? Are they Green with corrosion? Whats the scoop...pics? Details...
Is the cable the correct size?
Do you have an option to return solenoids?
there are four simple parts that need diagnosing...
(Starter) Checked ok...how about taking it to another spot to check?
(Batteries) Load tested?
(Solenoid) A known good one from another vehicle?????
(Cables) there can be issues where the terminals connect to the battery LUG ends both the single end or the T pass through where it connects to the battery on RH side...Maybe issues in those parts?
IF all those parts check ok...you then must have a problem with the angry
Purple fairies that cause all kinds of catastrophic havock and make things impossible to diagnose!
JM2CW
Al