Harrop 2300 supercharger to Optimiser 6500

Issue developed or presented itself with a power circuit after welding on the car. I did the usual removal of earths etc, however upon reconnecting everything found the instrument cluster for the aux gauges were powerless. Started the hunt, start looking for the most complicated combination of events within the history of the world then work backwards - chant of the engineer - and well it turned out to be one of the auto trip /reset devices - 50 amp unit feeding the distribution block. The unit had decided to crap out in sync with the unrelated activity of the welding. Have probably used these a dozen times across different amperage ratings, first to die. Just another thing to review and potentially chuck a spare in for. Swapped it out for a different unit and good to go. I like these for the ability to be able to isolate a bank of stuff with a push of a button, however suspect there are quality limits on the sensing and cycling also.

Passenger side stiffener plates welded out today. Completed the passenger side step, under pressure with grand kids here, rushed it and not happy, will have to rework it tomorrow I think. Glow plug relay looks like it craps its pants today - always something, white unburnt smoke on start up for maybe 1 minute, ran like a dog, then cleared up and hums like a bird, normal sounding. Bloody cars. With luck its the fuse, not the relay as its a custom from Brunswick - have a spare but still.

OK, found the following in the main fuse box under the dash today when starting into the glowplug adventure from yesterday. Both 15a fuses melted with the fuse wire intact i think. They are on the Blower 1 and 2 circuits. Unsure what else is fed off that circuit, was hoping it was the glowplug circuit - need to have a look at the wiring diagram, but Brunswick installed the new GP timer, with the conversion, logic would say its on the same circuit as factory? Any ideas additional to heat? Fuses look like a generic fuse you pick up in boxes of 50 for example, I did destroy one with the pliars getting it out but the filament looks like it was intact.

Forum has locked me out of postings pics t this time, so will try later.

Attachment 88186Attachment 88187
OK, using Google Chrome, on work laptop, as against EDGE on home computer.

I have managed to store all my Patrol manuals in a safe location, Nissan, Haines, Gregory's, and cant make heads nor tail of the nissan wiring diagram on the forum. Can anyone advise which fuse feeds the glow plug relay? I assume Brunswick would have taken the feed off the same circuit, however with no wiring diagrams issued for the conversion, and the business dead and buried, I am at a loss. I replace the melted fuses as it looks like they may feed the relay, but have not been able to get to the small blue relay as yet to check it. Kicked the car up just now and its still running lake a coughing dog, unburnt diesel covering the neighborhood. Would ideally like to resolve this tomorrow at latest instead of having it hanging over my head whilst I am at site for the next 10 days from Wed.

Quote:

---

Originally Posted by PeeBee

I have managed to store all my Patrol manuals in a safe location, Nissan, Haines, Gregory's, and cant make heads nor tail of the nissan wiring diagram on the forum. Can anyone advise which fuse feeds the glow plug relay? I assume Brunswick would have taken the feed off the same circuit, however with no wiring diagrams issued for the conversion, and the business dead and buried, I am at a loss. I replace the melted fuses as it looks like they may feed the relay, but have not been able to get to the small blue relay as yet to check it. Kicked the car up just now and its still running lake a coughing dog, unburnt diesel covering the neighborhood. Would ideally like to resolve this tomorrow at latest instead of having it hanging over my head whilst I am at site for the next 10 days from Wed.

---

Edit. Still in the dark after the phone call:(

Quote:

---

Originally Posted by mudnut

EF & EC Page . Fourth fuse from the bottom left of the fuse block 10amp Yellow/Red wire. And 5th from the top left hand side Brown wire. These are the two fuses on that page.

---

Thanks Craig, I will have a look tomorrow, appreciate the effort. With luck I will move the truck and find the manuals as well.

OK try again, this time running Firefox browser. Nissan manual shows the fuse block running horizontal, yet we all know it runs vertical, so I still need a reference for the Glow Plug relay supply, so I can check the fuse, then the rely then the timer. Any help appreciated. the hot fuse appears to be at root cause, dirty terminal on the Blower Motor control 15a fuse slot.

Weird how the manual is totally arse-about to any unit in Aus. Good luck, Phil.

One thing at a time. I will clean up the manky fuse terminal first, try to find why that developed exclusively into a local corrosion hotspot. Then recheck the fuses again. Swap out the relay, and then swap out the glowplug timer, once I find were I have hidden it under the dash! Bloody annoying this on-going nit picking issue