is the only fuse block for the 90 7.3l th eonly one under the dash? i dont see anyweres that the harness under the hood would conect to a fuse block.

 

on my dads 89 thats the only fuse block that i know of.

 

yes, only under dash

 

how do they get power from the battery? there doesnt look to be a big wire coming from the battery like what was on the dodge

 

no, it really isnt a big wire, i will look in my books to see if i can find a power feed to it and what color it is.

 

that wouldt be great thanks do you have a chart that shows what all the colors coming threw the firewall go to? that would make the wireing 10x simpler on this conversion id rather run all new wires from the firewall than try to patch sensors and wires

 

I think the power line is yellow, and about the same diameter as a phone cord. Slightly smaller.

 

if any one has a chart showing the colors of the wires and what they go to that would be great

 

bump wiring colors would be greatly appreciated