wiring question

those ammeter studs are insulated from the gauge cluster by fibre and plastic washers and a plastic sleeve
back of gauge---nut----fibre washer----plastic washer with sleave (like a top hat bush) into hole in gauge cluster back ----plastic washer---fibre washer-----nut leaveing the stud end for you to bolt the wires to, sticking out

In most cases those studs also mount the gauge in the cluster

if the meter is overloaded it gets hot and if the plastic melts the ammeter shorts...

just continuity check between case and stud to see if its OK.

if its not....get new inuslators platstic washers with sleeves from digikey or similar
and no harm in some heat shrink on the stud as it passes through the gauge cluster as well.

test it by putting it in circuit with a headlamp bulb, using thinish wire on your car battery....needle should twitch to about 3 amps. obvioulsy if there is a problem the wires will melt.... be aware of this before you test

when installing use a spikey washer of appropriate size either side of the eye on the end of the wires, the orginal brass nuts if you can, so the spikey washer gets some bite, and a dab of soft locktite or some enamel paint on the threads.

too strong on the locktite and you will wind the stud out next time you try to remove it and that really does break the ammeter


OOPs should have read the previous post before writing all this
apologies...its done now :)

Dave