312 wheel horse saftey switch bypass

Anonymous-0

Well-known Member
I'm having trouble following joe csuti's instructins on "living without saftey sw's" (option #2 in the 5/6/2013 instructions). I only have continuity with the tan wire with the key switch in the on position. With the key in the off position I have continuity with the tan, white, and orange wires. I'm not sure what I should do at this point.
 
What you need is help with tractor in the form of someone who can read/understand electrical drawings & an understanding of electrical circuits/wiring and also an understanding how to use an ohmmeter & interpet what meter is telling you relative to where/what you're checking in wiring,this is a HANDS ON JOB.

IF you look at wiring diag you'll see that tan,white & orange wire are NOT associated with ign kill circuit for eng,the tan wire is for oil float sw,white wire is DC output from alt on eng & orange wire is common pos(+)feed to idiot lite bar,IF you also look at legend for sw contacts you'll see that in stop position all of the above wires are connected together when ign sw in off/stop position,depending on where you're referencing to(neg/chassis ground or pos+ cable) you will get an ohmmeter reading due to a series loop/backfeed thru lamps,coils & sw's in electrical system when checking these wires & you'll end up chaseing a ghost,your concern is the blue/dk blue wire that runs between ign sw(M terminal)and ign coil on eng & any wire(s)that connect to this wire between ign sw & eng,it is also apparent that for whatever reason wiring to safety sw's was cut/spliced to bypass orignal problem didn't work & original problem is still present in that ign kill lead is still being grounded when cranking eng & you are loseing spark to plug.

IF you insist on useing tractor without checking & bypassing safety sw's & associated wiring then run a NEW wire between wiring harness connector at eng & ign sw,disconnect existing blue wire at each end & connect new wire at harness connector/ign sw where blue wire connected.

ALSO NOTE-I WILL NOT be held responsible if you choose to bypass safety sw's & go it alone to any damage caused to ohmmeter,burned out ign coil,burned up wiring harness or personal injury.
 
It works. Thank you Joe for the patience with a poor student. I can appreciate your concern for bypassing the saftey switches. Again, this site is the greatest!
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top