Ignition switches wirin

[THE-HOG]

I put whole new wiring harnesses in my 75 w100 with the 5.2 & it cranked then, put a new ignition switch in and now it doesn't crank. The switch has 2 thick wires and 4 small wires. My big wires are correct but I don't think my small ones are and I can't figure out a way to correct it.

 

[65 sporty]

I did some searching and found this, but you said you have 6 wires

 

[58pwrwgn]

You need to find the wire that is only hot when the key is turned to hot. This needs to be connected to the wire going to the starter relay.

 

[58pwrwgn]

Are you using the 5.2 computer. If so does that control the starter relay

 

[THE-HOG]

I did some searching and found this, but you said you have 6 wires



View attachment 24786

I already have a book for my truck but the Napa ks6691 (?) ignition switch has a brown black red yellow brown blue and a skinny black. Wiring harness has the book-match red pink, orange, skinny orange, black, blue/light blue,

 

[THE-HOG]

Are you using the 5.2 computer. If so does that control the starter relay

I do not believe so, how do I tell?