Calling all total loss gurus, electricians, and electrical engineers

[McDog]

Update: Hooked it up and cranked the ski this weekend. No current between negative battery post and anywhere else I put multimeter except a tiny 17 milliamps from pfp chamber for some reason. I figure maybe because saltwater in water jacket? It was touching nothing. I left the battery hooked up all day and periodically checked it with no problems. I guess it was solenoid that I replaced or maybe extra ground wire from ignition to battery or a bad cable because I replaced them all and took out the extra ground wire to battery.

 

[OnFireForJesus]

McDog,

I am an electrical contractor. I mainly deal with AC circuits but has a decent grasp on DC theory. I am clueless on TL (just saying). However, in your original post it seems like you may be paralleling the ground back to the battery. Weird, weird things happen when you parallel a ground from multiple points back to the source. In AC circuits, it is acutally against Code requirements to do such a thing.

I would highly recommend only 1 path from the battery to a common point. Example would be from the battery to the engine block, from the block to a terminal block (or maybe the ebox) where you would bond multiple ground wires. Ultimately, you only want a single return path back to the ground for both high and low current circuits.

Hope that makes sense and helps. I know you already did this but figured I would throw it out there for some insight and for anyone else that may read through the thread.

 

[McDog]

McDog,

I am an electrical contractor. I mainly deal with AC circuits but has a decent grasp on DC theory. I am clueless on TL (just saying). However, in your original post it seems like you may be paralleling the ground back to the battery. Weird, weird things happen when you parallel a ground from multiple points back to the source. In AC circuits, it is acutally against Code requirements to do such a thing.

I would highly recommend only 1 path from the battery to a common point. Example would be from the battery to the engine block, from the block to a terminal block (or maybe the ebox) where you would bond multiple ground wires. Ultimately, you only want a single return path back to the ground for both high and low current circuits.

Hope that makes sense and helps. I know you already did this but figured I would throw it out there for some insight and for anyone else that may read through the thread.

Thanks brother. That definitely explains things.

 

[Quinc]

McDog,

I am an electrical contractor. I mainly deal with AC circuits but has a decent grasp on DC theory. I am clueless on TL (just saying). However, in your original post it seems like you may be paralleling the ground back to the battery. Weird, weird things happen when you parallel a ground from multiple points back to the source. In AC circuits, it is acutally against Code requirements to do such a thing.

I would highly recommend only 1 path from the battery to a common point. Example would be from the battery to the engine block, from the block to a terminal block (or maybe the ebox) where you would bond multiple ground wires. Ultimately, you only want a single return path back to the ground for both high and low current circuits.

Hope that makes sense and helps. I know you already did this but figured I would throw it out there for some insight and for anyone else that may read through the thread.

ATP also recommends this in there TS2 instructions.