If you need more just post back here. There's some awesome guys on this board
I did not realize at first you were going Painless so the connector and reset I showed can "both go away." Also since you are going Painless I'd NOT try to use a bulkhead connector at all. If you pull it out and look at it, you can easily cut/ file a plate which will snap back in with the original clips and gasket, then just use the (should have) the big Painless grommet and run the wires straight through. I would NOT try and hook up the ammeter.
There's an old old thread on here gives ideas on converting an ammeter to a voltmeter. I don't think the Sunpro gauge is available any more, but still some great ideas in hhere. Read through, it covers several different cluster styles
Ammeter to Voltmeter...who does it?
