^^^ Yup, crimp connectors have no place on a vehicle, unless you solder the wires to the terminal and use heat shrink tube to seal out moisture. 60/40 lead tin rosin core solder ONLY.

I have moved away from lead tin solder, I use lead free rosin core, works amazing. which reminds me, I have to pull the tail lights and put some dialect grease on the quick connects I made.

Interesting.... lead tin solder has been around for 60 years and has always worked fine. EPA must have stepped in cuz some tree hugger group was complaining about the lead. Hmm, what about the mercury in the CFL bulbs from China that we have to buy? ;)

Check your ground cable fom the battery. Had the same problem. Make sure it is connected to engine block or frame. Also has to be clean and tight.I found that AFTER changing stater solenoid & positive cabe.

I actualy tryed the flux core first with bad results,I couldnt get it to flow.Luckily I had lead tin solder which worked.