Well folks, old Rollin' Thunder almost bit the dust today!
My '67 Dodge Town Wagon/Cummins 4BT swap was a low-budget boogie and the short bucks syndrome just about took out her highness! Made the run up and over and down the mountains into the nearest town today, and just as I rolled in the smoke suddenly rolled out! From under the dash dense black clouds of billowing acrid smoke erupted and filled the forward cab. Pulled over, jumped out and threw the hood open and pulled the battery quick disconnect [wing-nut on main lug]. Looked back in and still smoking and sparking so had to run and grab a wrench to undo the other hot post on the marine battery. That gets a wing nut tonight!
All wiring is brand new and load centers are circuit breaker protected. Also wiring was a major part of my career so no bumbling and fumbling there. What I NEVER expected happened. Make a note of that somewhere... A friend gave me a matched 3 gauge set of used AutoMeter AutoGauge instruments to help me on my insolvent Cummins swap. So far I've had to replace the Temp gauge, then the Oil gauge died. Today the Voltage gauge attempted to kill the whole truck! Some sort of internal short?
Volts gauge was wired off of the 2nd load center, to sense voltage after all loads were drawn: hot from 2nd panel to gauge, to ground. The wires that fried were the hot feed to AutoGauge Voltmeter and the Main Battery feed wire to my ignition switch. Ignition switch comes off of circuit breaker protected Primary load center, after it, with no load except to switch. All individual circuits are breaker protected. Never thought to fuse the switch wire [will tonite]. Then again, I never thought to fuse a Voltage gauge!??! Huh?!
I was 'fortunate' that the Ace hardware was 300 yards away, so picked up some crimp terminals and a hank of 16 ga [all they had!]. Proceeded to rewire as needed [you diesel wiseguys will know that I could have cut wires and driven home, only needing to switch on fuel solenoid for it to run]. Also found why all the smoke: burning wires had sliced thru the mechanical oil gauge Parker nylon tubing, oil everywhere! Went back to Ace and bought a 1/8 NPT plug and disco'd that gauge. So, got her running and made it a mile to the bank and parked. More fresh oil all over the carpets!
True Value Hardware was about 300 yards away [Hah!] so got another 1/8 NPT plug to disco my secondary [redundant sytem] mechanical oil pressure gauge. 5 different people stopped and I made 2 new friends :~ )
AutoMeter/AutoGauge quality: NOT! See pic...
My '67 Dodge Town Wagon/Cummins 4BT swap was a low-budget boogie and the short bucks syndrome just about took out her highness! Made the run up and over and down the mountains into the nearest town today, and just as I rolled in the smoke suddenly rolled out! From under the dash dense black clouds of billowing acrid smoke erupted and filled the forward cab. Pulled over, jumped out and threw the hood open and pulled the battery quick disconnect [wing-nut on main lug]. Looked back in and still smoking and sparking so had to run and grab a wrench to undo the other hot post on the marine battery. That gets a wing nut tonight!
All wiring is brand new and load centers are circuit breaker protected. Also wiring was a major part of my career so no bumbling and fumbling there. What I NEVER expected happened. Make a note of that somewhere... A friend gave me a matched 3 gauge set of used AutoMeter AutoGauge instruments to help me on my insolvent Cummins swap. So far I've had to replace the Temp gauge, then the Oil gauge died. Today the Voltage gauge attempted to kill the whole truck! Some sort of internal short?
Volts gauge was wired off of the 2nd load center, to sense voltage after all loads were drawn: hot from 2nd panel to gauge, to ground. The wires that fried were the hot feed to AutoGauge Voltmeter and the Main Battery feed wire to my ignition switch. Ignition switch comes off of circuit breaker protected Primary load center, after it, with no load except to switch. All individual circuits are breaker protected. Never thought to fuse the switch wire [will tonite]. Then again, I never thought to fuse a Voltage gauge!??! Huh?!
I was 'fortunate' that the Ace hardware was 300 yards away, so picked up some crimp terminals and a hank of 16 ga [all they had!]. Proceeded to rewire as needed [you diesel wiseguys will know that I could have cut wires and driven home, only needing to switch on fuel solenoid for it to run]. Also found why all the smoke: burning wires had sliced thru the mechanical oil gauge Parker nylon tubing, oil everywhere! Went back to Ace and bought a 1/8 NPT plug and disco'd that gauge. So, got her running and made it a mile to the bank and parked. More fresh oil all over the carpets!
True Value Hardware was about 300 yards away [Hah!] so got another 1/8 NPT plug to disco my secondary [redundant sytem] mechanical oil pressure gauge. 5 different people stopped and I made 2 new friends :~ )
AutoMeter/AutoGauge quality: NOT! See pic...
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