Is it vaseline and then connect or connect and then vaseline
Tris
Scrape the Lead post until shiney, apply Vaseline then bolt it back together.
Negative disconnected first, re-connected last.
If you were to look under a microscope the joint is like a couple of mountain ranges scrunched together, the Vaseline fills in the gaps and keeps the Oxygen out, no Oxygen = no Lead Oxide.
Lead Oxide is an insulator, you can see that if you touch your meter onto the gray Lead post, it doesn't connect until you jab the point in. The guys over on the Suzuki site "Intruder Alert Café" used to swear by putting a star washer between the joint but I think that's BS.
One application of Vaseline lasts for years, even regular grease works but it's dirty.
Similar applies to connections in a wet area, the Vaseline will stop corrosion or rust, I use it on all crimped joints just poke the wire into the jar first.
Just out of curiosity if you have a 12 V test light pull out the 2 main 30 Amp fuses and put the test light in place of each fuse (not to chassis) to see if there is any drain. You can test the light by turning on the ignition, that will make it light up for sure.
