I have a battery load tester that is giving me trouble. A battery load tester is connected to a battery and the voltage can be found. Upon pressing a button on the load tester the circuit is completed between the positive and negative terminal on the battery and the cranking amps of the battery can be found. The problem I am having is that the wire in the load tester which connects to a metal heat sink keeps overheating and coming seperated. What type of material should I use to permanently connect the wire to the heat sink? I am not exactly sure of how hot its getting, but I imagine it is quite high. Any suggestions at all are welcome and appreciated! Thanks!