start issue

[fordF250]

Replaced the starter about 9 months ago, and everything has been going good until today. I wait for the WTS light to go off and turn the key, I get a loud click then nothing until like 15 secs later than it will crank and start. just wondering if its the relay on the firewall. any input is helpful

[deselpowered]

take off your battery cables and clean the posts for both batteries and spray the anti corrosive stuff, worked for me.

[85_305]

Dirty cables... bad battery/s.... bad grounds...