Logical1 Posted March 18 Report Share Posted March 18 Long story short, I am back in the NW working for a while. I needed a car to get around and found a beat up 84' 720rwd for cheap, slapped a weber on her and she runs like a top! However there is previous owner wiring insanity. I doubt this is related but when I swapped out the stock carb for the weber, the gauges & flashers stopped working! the only thing I did was unplug the old carb choke wiring. I checked the circuit fuse and it was blown, swapped it out and it blew again but worked for a couple seconds... did a check with a slightly bigger fuse and it still blew but my gauges and flashers worked for a few seconds. My main concern is the flashers as I am working in downtown Seattle. the emergency flash switch works and is not the problem(very familiar with that one) I am far away from home and don't have many tools or any of my FSM with me unfortunately. I have been checking around the truck for obvious shorts or electrical craziness from the previous owner without any luck. I head to work tomorrow at 6 am so I only have a few hours to hopefully fix it. I really don't think I have the right tools to get into the gauge cluster which is probably where the short is also. Any ideas are awesome! Quote Link to comment
bottomwatcher Posted March 19 Report Share Posted March 19 2 hours ago, Logical1 said: Long story short, I am back in the NW working for a while. I needed a car to get around and found a beat up 84' 720rwd for cheap, slapped a weber on her and she runs like a top! However there is previous owner wiring insanity. I doubt this is related but when I swapped out the stock carb for the weber, the gauges & flashers stopped working! the only thing I did was unplug the old carb choke wiring. I checked the circuit fuse and it was blown, swapped it out and it blew again but worked for a couple seconds... did a check with a slightly bigger fuse and it still blew but my gauges and flashers worked for a few seconds. My main concern is the flashers as I am working in downtown Seattle. the emergency flash switch works and is not the problem(very familiar with that one) I am far away from home and don't have many tools or any of my FSM with me unfortunately. I have been checking around the truck for obvious shorts or electrical craziness from the previous owner without any luck. I head to work tomorrow at 6 am so I only have a few hours to hopefully fix it. I really don't think I have the right tools to get into the gauge cluster which is probably where the short is also. Any ideas are awesome! A little late for help but obviously a short somewhere. Is there a self installed trailer wiring harness in there? Good place to look for shorts from a crappy job or a physical load put on the wiring harness. Look for some chafing points. I know you know your way around a vom. Adding larger fuses is a good way to let the smoke out from somewhere you don't want it getting out. Quote Link to comment
datzenmike Posted March 19 Report Share Posted March 19 There is a red? idle cut wire, not being used on the Weber. Where is it, what's it touching now??????? 2 Quote Link to comment
Icehouse Posted March 19 Report Share Posted March 19 Arlington Pick and Pull has a 1980 720 right now. Maybe you can snag some wiring out of it. Still has the 5 speed too! 1 Quote Link to comment
]2eDeYe Posted March 21 Report Share Posted March 21 On 3/19/2024 at 11:58 AM, Icehouse said: Arlington Pick and Pull has a 1980 720 right now. Maybe you can snag some wiring out of it. Still has the 5 speed too! I looked up the price on transmissions there after you mentioned the Z in Lynwood, wholly crap lol. Quote Link to comment
datzenmike Posted March 21 Report Share Posted March 21 Did you check the idle cut wire?? Is it still blowing the fuse? Quote Link to comment
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