Hey everyone, so I'm having this strange issue with my truck at the moment. When I initially insert the key into the ingition I get the audible buzzing sound and it sounds normal (sometimes), but when I turn the key to acc all my dash lights dim badly and the buzzing tone changes. The problem gets worse when I turn my running lights on (lights get even dimmer), and when i turn on the headlights the entire dash basically goes blank. Ignoring the dimming lights, if I leave them off and try to start the truck, when I turn the key so the engine will crank I get no clicks, no cranking, just dead. I know the obvious thing to check would be the battery, however it reads around 12.5 (battery is from 2015) There is corrosion around the battery terminals, but they're tight and I've never had an issue with this before. I've checked for any bare wires, like wires running through the firewall where the gromits have dry-rotted, but no dice, they're all good. I did however replace a blown 7.5A ignition fuse in the interior driver side fusebox, but that didn't even help the solenoid click. I'm pretty stumped on this one, any ideas? Thanks!
Thanks Jorge, I have two connection points coming off the neg terminal, one to the body and the larger gauge primary. I assume you mean just in general check the ground?
X2 on this. Used the same method on my truck when i rewired it, wasnt necessary buts its a solid crank every time
I had a similar issue and found my starter wasn’t grounding properly. So I put a frame to nut on starter ground strap and it came to life.