atv welding question

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I'm building steel cargo racks for a guy who hates his plastic oem junk and will need to make some tacks with the mounting tabs bolted to the frame. Will I need to disconnect the battery or other electrical components to avoid damage to the electrical system ? It does have an EFI setup and I'd hate to have to replace it.   Thanks for any advice you can offer.Miller 211Miller T-bolt ac/dcVictor o/aMilwaukee ChopsawDewalt, Milwaukee minigrinderDelta drill pressDelta bench grinderair grinder, die grinderHF pipe benderHF horizontal bandsaw
Reply:It won't hurt to disconnect it and keep the work ground close to where you're welding. Better safe than sorry.                                        MikeOl' Stonebreaker  "Experience is the name everyone gives to their mistakes"Hobart G-213 portableMiller 175 migMiller thunderbolt ac/dc stick Victor O/A setupMakita chop saw
Reply:The sensitive bits are the electronic boxes, the most expensive one will most likely be the EFI brain. I'd pull the plug on that one at the very least - disconnecting the battery does little to protect the 50 other inputs/outputs from the computer that doesn't go to the battery. (No, the risk isn't very big as long as welding is done right, but it's a big loss to take IF it goes sideways.)
Reply:Thanks for the input, guys.   Now all I gotta do is find the dang efi box.  They don't make atvs ez to work on !Miller 211Miller T-bolt ac/dcVictor o/aMilwaukee ChopsawDewalt, Milwaukee minigrinderDelta drill pressDelta bench grinderair grinder, die grinderHF pipe benderHF horizontal bandsaw
Reply:Most of the voxes are located in two places, right by the steering stem, or near the back behind the plastic and under the seat area.
Reply:Originally Posted by turismolover22Most of the voxes are located in two places, right by the steering stem, or near the back behind the plastic and under the seat area.