[Griffin12]

Got a ls swap in a 2012, a guy who was helping me told me to run a wire from the positive side of my battery to my starter fuse, now the truck has no power, my radio comes on but thats it, no ding or anything when i turn the key, an advice is appreciated.

 

[cart7881]

Not much to go on there. You have an ls swap into a 2012. Was the swapped engine running prior to this wiring mod? What was the reason you needed to wire from the battery to the starter fuse? Is the battery good? Are the terminals clean and secure? Did you do anything to change the configuration of the positive battery cable? Is the maxi fuse good? Are all of the grounds connected, including the ones on the engine?

 

[Griffin12]

Yea everything ran fine before i pulled the new motor, i got the harness from current performance, i just rewired all my ground cables, it has a brand new battery in it and all fuses and relays are good, this is my first swap so i had a guy helping me but hes left me hangin so far, the starter and exaust were all i had left an when i put the starter on he told me to run that wire, im not sure why but now its dead in the water.

 

[cart7881]

Okay, start by removing the wire that you installed from the battery to the starter fuse. Unless you mucked with the original battery positive cable, there was already a wire from the battery to that fuse. If the battery positive cable harness has been mucked with, all bets are off.

With a meter, or a test light, check that there is battery voltage at the large wire at the starter motor. Use the engine block for a ground. There should be power there at all times. Then with the key in 'start' position check for battery voltage at the solenoid connector on the starter.

Assuming that you have an auto transmission, the original start circuit included the Park/Neutral Position switch. Don't have any idea of how that would be wired into the harness now installed. Unless you know the year/make/model of the donor vehicle for the engine and ECM, it will be difficult to figure out the circuits involved.

There are a lot of guys that have swapped engines. Maybe one of them will come by to offer some better advice.

 

[Griffin12]

Okay, start by removing the wire that you installed from the battery to the starter fuse. Unless you mucked with the original battery positive cable, there was already a wire from the battery to that fuse. If the battery positive cable harness has been mucked with, all bets are off.

With a meter, or a test light, check that there is battery voltage at the large wire at the starter motor. Use the engine block for a ground. There should be power there at all times. Then with the key in 'start' position check for battery voltage at the solenoid connector on the starter.

Assuming that you have an auto transmission, the original start circuit included the Park/Neutral Position switch. Don't have any idea of how that would be wired into the harness now installed. Unless you know the year/make/model of the donor vehicle for the engine and ECM, it will be difficult to figure out the circuits involved.

There are a lot of guys that have swapped engines. Maybe one of them will come by to offer some better advice.

Okay thanks alot man i know its not very descriptive