Remote Solenoid Issue?

If I'm reading things right, and I'm no expert, I think the solenoid in the trunk area is to avoid having a live high amp 12 volt cable running from trunk to starter. The solenoid should ensure the starter cable is only live during cranking. I'm sure it will work fine without it.

 

My 12v cable is sleeved in 3/8th fuel line and convoluted tubing

 

Oh, believe me....I'm NOT the minister of safety in any way... If it were me, I'd eliminate the trunk relay, especially if you have the big cable routed and protected.

 

Electromagnetic field coils with not leave the starter drive engaged in the ring gear after the engine is started. A permanent magnet field starter will absolutely hang the drive up in the ring gear for a few seconds after start up. The starter pictured above is a electromagnetic starter.

 

While I've heard this MANY times before that the vehicles wiring is protected by additional layers and/or routing, my concern is what happens if one is in a bad enough accident to where this live cable, or any live cable, were to get shorted to ground ?. How would routing or additional coverings protect from this ?. Some may say, well I have a master on/off switch to kill power but I really doubt if you get in a bad enough accident that you might be even able to get to the switch to turn it off if you have been knocked out.
Ideally one would want to have the wiring protected by something that automatically does this and they have had out for YEARS a thing called fuses. Yep, fuses open up when the current exceeds their specifications and do not need anyone to help them out to do so. One just cannot randomly put any fuse on any wire but if done properly if the current deamnds are larger than the wire, then the fuse will blow. A fuse, circuit breaker, fusible link, and such are not there to protect the device BUT to protect the wire.
Some will say that no manufacturer puts any fuse on a starter circuit and years ago this was true but they learned and others ARE learning. Years ago, I never knew here were fuses that were rated at 200A and higher but they are out there and there is a need for them.

Factory Jaguar starter fusing:



Chevrolet Cruze:



From publications:





Jim

 

Lokar makes an interior battery disconnect handle that connects to the battery disconnect by a morse cable ( shifter cable) . This allows the driver to turn off the power from the driver's seat and also from outside the vehicle's tail panel

As I've mentioned I've seen to many over engineered set ups such as from MAD electrical fail at the track and never seen a moroso battery disconnect (master cutoff ) set up fail


https://www.jegs.com/i/Lokar/625/13...8G9WrmZHiWChgWbIkx55mmFGbSovUPN0aAjiLEALw_wcB

 

Not to get in an argument here but if no one is around to turn off a moroso battery disconnect what happens with a short to ground ?.

Someone HAS to turn the switch off to stop current flow whether is is in an undesired situation that causes no damage like when storing the car or to stop the flow of current should a short occur past the switch. I would like something that disconnects power if a fault occurs and if it requires replacing a part, so be it. A lot cheaper replacing an inexpensive part than the whole car.

While it's unknown what caused the below, could an inexpensive properly placed fuse have prevented this ?. A master on/off switch that was forgotten to be turned off could have also allowed this happen IF it was indeed an electrical fire.



Jim