No power to dome fuse

[drcomanche]

I know its been discussed but i havent found my exact problem here.. So, in trying to get the interior squared away, I was playing around with the radio and couldn't get it to work. Did a quick test on power, the constant is there, but the full power(red) wire had nothing. I looked at the fuse block and saw no popped fuses for any of them. The only thing I could pinpoint was that the dome lamp fuse, with integrates with the radio harness, was receiving no power at all in any keyed position(despite the manual saying it should be hot all times). My question is, where does the power feed from in the pdc? Is it directly from the fuse block 40 amp maxi? And if not, whats the next step for figuring out where my power is? Worth noting is that this wiring harness is not affected in any way by leaking fluid. It's a fresh install after a restoration of a 91 92 harness. 

[Jeffery Starn]

I would pull all the fuses and check for corrosion, trace the harness and check all connection points or any frays see if it’s getting a good ground 

[drcomanche]

22 minutes ago, Jeffery Starn said:

I would pull all the fuses and check for corrosion, trace the harness and check all connection points or any frays see if it’s getting a good ground 

Offhand, I can say I have checked all the fuses(and replaced them, just to be sure). Ground points at the underside of the dash, firewall, left, and right fenders are all good. There isn't really any connection points I know of besides the fuse block itself at the firewall and the pdc, both of which have no corrosion. Tracing the harness is my last resort, but I was hoping someone knew what the pinout wire was for the dome fuse so I could start there. As it stands, I have no clue which wire runs to it unless I split the block at the firewall, which I would also like to avoid.

[Jeffery Starn]

Ya I don’t blame you I would avoid that too, I’m not sure what the pin out wire is I’m sorry 

[OldSch88L]

Did you check your fusible links? Here's a picture for reference; it's the black sleeve things. They're gonna be in the engine compartment near the battery.

[drcomanche]

1 hour ago, OldSch88L said:

Did you check your fusible links? Here's a picture for reference; it's the black sleeve things. They're gonna be in the engine compartment near the battery.

Mine isn't a renix era harness, so no fusible links.

[OldSch88L]

1 hour ago, drcomanche said:

Mine isn't a renix era harness, so no fusible links.

My bad!!! Didn't know these were a renix thing!!!

[drcomanche]

Just wanted to update this here for anyone who may have this problem later. I ended up just tracing the wires, disconnecting the firewall block(which I really didn't want to do), and checking connectivity to see where the break could be. Ended up finding these plugs that the wires ran through. I have no idea why they didn't just run the wires all the way there or what purpose this connector has, but its an inconvenience. Turned out the plugs inside were corroded a bit. Cleaned them up and greased them and now I have full power.

 

 

[Minuit]

Looks like the right spot for the "ignition off draw" connector. Meant to be unplugged if the vehicle is going to sit for a long time to prevent the battery from going flat. Pretty much everything that's always powered runs through that connector.