'90 burb electrical, fusible link?

[b79holmes]

Thanks! I'll take a look around the starter tomorrow. Tonight, I quickly checked with my multimeter and it seems I am getting 12 volts at the firewall junction. I know the connections between the battery, the alternator, and the grounds are all still functional. Does it make sense that my starter still turns over if a link is blown down there?

[kwmech]

Originally Posted by b79holmes

. Does it make sense that my starter still turns over if a link is blown down there?

Possibly, I think there are 2 links down there. I haven't been able to get to rewiring my burb yet and bring them up top

[b79holmes]

Well I checked the two links down there. One was at the end of the black wire, and the other in the middle of the red wire. Both seemed to have a solid connection from before the black link to the end of the wire.

Looking at my battery, I realize I forgot to mention that it looks to have been changed to a different style at some point and I think the wiring was changed (the wire from the alternator is ridiculously long.) I'll include pics of that.

Do you know which wire in the engine bay actually goes to the fuse box? If I could find that one, I may be able to follow it back until I find a bad connection.

[kwmech]

Check continuity on the orange wire or pull on it and see if it acts like a rubber band. The wire with the small eyelet should be purple, that is the wire that comes form the ign switch for cranking the starter motor over. what's with all the wires at the battery? Side post battery is correct

[b79holmes]

I checked the orange wire off the starter and it has continuity from the end to above the black link. I can't seem to trace it once it goes into that tube and up behind the engine. I'll take the air cleaner off tonight and see if I can follow it further. I don't think the 'rubber band' test would work on my truck, as the insulation on my wires feels pretty brittle. I'm not sure it would stretch.

As for the wires by the battery, I never noticed until recently that someone extended the wire from the alternator to the positive post. That's the wire you see in my hand. I'm not sure why this was done, but it seems two new segments of wire were added to it with crimp connectors. I did test that wire and it has continuity.

[b79holmes]

I pulled the air cleaner off and more or less guesstimated that the wire from the starter goes to the firewall junction. I checked and it does have continuity. I then put the wires back on the starter, and checked for fuel as I cranked the engine over. There wasn't any. I then pulled the plug on the #3 cylinder and it had a strong spark.

When I poured gas down the throttle body, the truck fired right up but ran really rough, so I only kept feeding it for about 15 seconds.


So knowing that, is there any single circuit which controls the fuel pump, ecm, radio, horn, and everything that runs off the headlight switch?

[Ryan Hubbard]

Have you checked the individual fuses?