Interesting finds in '88 Dodge/RoadTrek
In taking the old non-functional battery isolator out from under the battery tray, behind the driver's side headlight, several other issues have come to light. First and foremost is the condition of the original isolator, rusted/corroded due apparently to being covered with years of road grit, leaves and other debris that stayed moist due to lack of air circulation. I removed the original battery and found its tray badly rusted, perhaps from having acid spilled on it. Also found the wiring harness had been rubbing on the edge of the battery tray. The damage was only to the outer fabric wrapping and had not penetrated to the plastic wire insulation, but eventually would have caused shorts in any of a large number of engine compartment wires. Would likely NOT have been pretty! I've been re-wrapping the wire harnesses with fresh Scotch 33+ electrical tape (the good stuff!) and using some brush on electrical tape to seal the ends of the wrappings. I've also disconnected the electrical plugs, saturated them with penetrants and connected and disconnected them several times to "scrub" the contact surfaces, then filled the connectors with dielectric grease to keep moisture from getting back in. Messy, but I believe worthwhile.
It's not being a total restoration, but re-working problem areas that have shown up in 26 years of service as they've been found only seems prudent. I call those "while I'm in the neighborhood" projects. True, they add time and expense to the project, but they do inspire confidence that the rig will provide more years of faithful service. But, BOY is it hot in my driveway in South Austin, Texas!
If it ain't broke, fix it 'til it is!