Advocate I
Nasty! So sorry that happened to you.
My 76 Cherokee almost caught fire once, it was resistance at the electrical joint for the high/low beam switch. Thankfully I had no carpet in it and got to it in time. Fixed it for good by going to relays and feeding headlights direct from battery, demoting the dash circuit to low amp duties. Headlights got a heck of a lot brighter too! The usual suspect for a FSJ burning down is the high amp charging circuit. It goes from the alternator to the amp gauge and then through the dash functions, and then back to the engine compartment and finally the battery. Any high resistance or short along the way (like an amp gauge shorting) and you end up with glowing hot primary circuit igniting whatever it contacts.
Another area to look is if your battery came loose. Top terminal batteries can sometimes make contact with the hood brace (especially if the posts are fender side if I recall correctly). I ended up converting to a side post battery after finding a couple arc spots on the terminal and hood brace.
I don't have many spare parts left, but do have a 2150 2BBL with altitude compensator if that is what you were running AND it got fried. Or alternately an Edelbrock Performer and Holley truck carb combo, or a Duntov Z manifold and matching Holley Carb combo- all collecting dust on the garage shelf.
Sad to see but in the end it is a blessing it happened in town. Looks like only soft parts were sacrificed.
James
My 76 Cherokee almost caught fire once, it was resistance at the electrical joint for the high/low beam switch. Thankfully I had no carpet in it and got to it in time. Fixed it for good by going to relays and feeding headlights direct from battery, demoting the dash circuit to low amp duties. Headlights got a heck of a lot brighter too! The usual suspect for a FSJ burning down is the high amp charging circuit. It goes from the alternator to the amp gauge and then through the dash functions, and then back to the engine compartment and finally the battery. Any high resistance or short along the way (like an amp gauge shorting) and you end up with glowing hot primary circuit igniting whatever it contacts.
Another area to look is if your battery came loose. Top terminal batteries can sometimes make contact with the hood brace (especially if the posts are fender side if I recall correctly). I ended up converting to a side post battery after finding a couple arc spots on the terminal and hood brace.
I don't have many spare parts left, but do have a 2150 2BBL with altitude compensator if that is what you were running AND it got fried. Or alternately an Edelbrock Performer and Holley truck carb combo, or a Duntov Z manifold and matching Holley Carb combo- all collecting dust on the garage shelf.
Sad to see but in the end it is a blessing it happened in town. Looks like only soft parts were sacrificed.
James