LarryMaine
Member
2nd posting on this issue. After Resto on my 1957 850 with 12 V conversion also, my starter would not stop running when button was pressed until I removed battery cables. Forum response was to change my 6V starter relay for a 12 V relay, specifically a NAPA 12 V ST542. I did that this week, and now starter will not start at all. I don't have a multimeter, but I do have a 12 V light continuity tester. I have removed trans lid and double checked starter button as well (i.e. neutral lock). Has a new fully charged 12 V Gel battery. There are no fuses or resisters installed anywhere in the wiring for the starter circuit. I checked All grounds and grounds are all fine, i.e. frame, solenoid/relay metal frame and 2 mounting bolts, trans lid, starter motor, etc. When button is depressed, light goes on when tested to relay battery terminal. Also light comes on when tested from relay battery terminal to both of the smaller bottom terminals. And is on all the time when connected to starter terminal (because starter motor is grounded to frame). Wire test from relay starter terminal to switch and other small terminals never lights up. No continuity between smaller two terminals at any time (switch depressed or not). My wiring matches all the relevant archive diagrams for 12 V conversions. So, I know starter works, I know switch works. I have a brand new relay/solenoid. Can my relay be faulty right out of the box? If I get a multimeter, how do I test either on or off the tractor if the relay is good or bad? Any thoughts, experiences, etc. may help me avoid a complete mental breakdown. I'm trying here guys, but this one is just killing me. Thanks, Larry.