Help: No power to ignition

[SnowNeck]

Alright so i have a 1985 GMC high sierra, and not until recently I've been having this starting/ignition problem. so when i go to start my truck wether its been sitting over night or just a few minutes as i get gas when i go to turn the key to start it... Nothing no clicks, im getting no power. so i knew it the battery well thought anyway. i got a brand new battery and same thing. happens every time i go to start my truck. what ive been having to do is take off the Negative wire from the battery, and put it right back on and it starts. i don't get it at all, im not shacking any loose wire just taking it off and putting it right back on. i don't have any rust, corrosion, anything. also as of the last few days itll start.. or have power to the ignition when the engine has cooled down, but once again ill drive to the gas station get gas go to start it up no power and have to fidle withe the battery cables for it to work. my thoughts -bad relay. I need any thoughts on what this might be, this is my daily driver so its important. thank you.

[old Rusty C10]

check the fusible links up on the firewall one may have popped

[SnowNeck]

Originally Posted by old Rusty C10

check the fusible links up on the firewall one may have popped

alright ill check them tomorrow, but i just went out side (like 25 degrees out) started. It will only start when cold, i dont get it. i mean once theres power it starts right up.

[SnowNeck]

Originally Posted by old Rusty C10

check the fusible links up on the firewall one may have popped

You were right thank you! i came across an old splicing job and it had came apart an done poorly, so i fixed it and what do you know she's back on the road again thank you!

[chevy-fun]

Originally Posted by old Rusty C10

check the fusible links up on the firewall one may have popped

could you post a pic of what i should look for.