This morning I went out with my multimeter and checked the solenoid. Last night I disconnected the positive lead from the house batteries and after awhile the solenoid cooled down. So, with that lead still disconnected the other lead from the chassis battery was hot as you would expect, the lug for the house battery lead was cold, as were the small trigger and ground terminals. If the solenoid were hanging up, I expect that the house battery lead would also have been hot.
Next, I attached the house battery lead, the solenoid activated and the trigger lead became hot. I'm thinking that the the current is passing between the house battery terminal and the trigger circuit internally.
I ordered a new one and will repost once installed.
Jerry
Thor Forums
