Ground straps: How many, where?

[dremu]

I'm mixing and matching motors on a truck that's had various bad things done to it, so I wanna do the ground straps correctly.

Seems like there ahould be one from each battery to the frame, and from the engine to the frame ... plus maybe one to the firewall from somewhere out of those-all?

Anything I'm missing or some preferred way to do it?

-- A

 

[79k20350]

Im not sure about dual battery setups, i imagine it depends on if the are in series or parrellel...? Idk though. But on a standard setup you want battery-> frame, frame-> block, block/ frame-> body

 

[dremu]

Im not sure about dual battery setups, i imagine it depends on if the are in series or parrellel...? Idk though. But on a standard setup you want battery-> frame, frame-> block, block/ frame-> body

This is a 12V system and the batteries are in parallel. The CUCV's are a whole other ball of wax, but that's unrelated, thankfully.

The other info is good; thanks!

-- A

 

[86dieselburb]

On my diesel burb, the driver side battery is grounded to the A/C bracket and the passenger side battery is grounded to the alternator bracket. The motor is grounded to the frame from the front of the motor to the frame near the motor mount frame bracket. There is an additional ground from the intake to the body.

 

[dremu]

On my diesel burb, the driver side battery is grounded to the A/C bracket and the passenger side battery is grounded to the alternator bracket. The motor is grounded to the frame from the front of the motor to the frame near the motor mount frame bracket. There is an additional mount from the intake to the body.

I assume this last means there's an additional ground strap from the intake to the body?

-- A

 

[ryoken]

I'm mixing and matching motors on a truck that's had various bad things done to it, so I wanna do the ground straps correctly.

Seems like there ahould be one from each battery to the frame, and from the engine to the frame ... plus maybe one to the firewall from somewhere out of those-all?

Anything I'm missing or some preferred way to do it?

-- A

Depends on if the batteries are near each other.. It's always preferable to ground the one battery to the other. than have either go to the frame or block. then one from that same bolt over to the block or frame...

You should definitely have one from either of those spots over to the rad support.. then there should be a small factory strap from the frame to the bottom of the firewal iirc..

 

[86dieselburb]

I assume this last means there's an additional ground strap from the intake to the body?

-- A

Yes sir, gotta learn to proof read one of these days The stap goes from the intake manifold to the firewall.

 

[dyeager535]

I don't believe there is a ground strap from the frame to firewall. Firewall to engine, yes. Mines a pretty decent sized braided copper piece. (stock) Core support ground does the same thing. (which mine has as well, again stock, comes off the battery ground wire)