20 GA blue "W" Your lucky! I couldn't read mine, but a friend on another Forum could read his.

The fuse link is blue, the wire will be yellow.

However note there is more then one blue fuse link yellow wire combination.

Fuse "W" Fuel pump relay
Fuse "N" EEC power relay (Check that one also)
Fuse "M" Engine compt LT (w/o option) and Fuse #1
Fuse "P" Trailer marker LTS relay and Engine compt LT (w/ engine compt lt option)


All blue fuseable links, all with yellow wire conductors leaving them.
Hopefully you can read the letter on em.

 

Thanks, that gives a a couple places to look.

 

Tomorrow, I'll locate my "W" link in the daylight & post location if you haven't found your's by then. "N" too, as they both have to be good.......to go!

 

On my 92 on the fuseblock under the hood fuse #16 (4th one up next to the pump relay 20amp) is the fuel pump feed.

 

I'm going under the assumption that his 90' is pre-underhood fuse box. I don't know for sure.

 

I believe your right after i posted I went and checked in one of my books it seems to run through a link W as you said it shows to be a yellow wire.

 

It happens. I try not to get too used to it!

 

Fuel pump relay/Green.
ECU relay/Brown. (next to FPR)

 

OK, looks like they are all right by the battery. Thanks guys, that was a big help. I'll look that over on Friday.

 

91 f150 here,the yellow wires run from the solenoid on the large terminal towards the back and run right next to the battery.NAPA carries the links.