gregchrysler Posted August 1, 2014 Share Posted August 1, 2014 Any way of bypassing circuit breakd wit resistor on 49 Chrysler 251 engine keeps shorting out Link to comment Share on other sites More sharing options...
Rusty_OToole Posted August 1, 2014 Share Posted August 1, 2014 You can disconnect them off the coil and the car will still run. I believe it will shift up but not down, I know it affects the shifting but you can still drive it.If they are connected properly they will not affect the running of the engine but they must be connected right. The resistor is there to prevent the coil from shorting out, the circuit breaker in case of a short.You can replace them with a new resistor and new circuit breaker if they are defective, does not have to be the OEM style, any kind will do. Including the kind you buy in local electronics or auto parts stores. I can look up the values if you like. Link to comment Share on other sites More sharing options...
Rusty_OToole Posted August 1, 2014 Share Posted August 1, 2014 Usually the problem is frayed, broken or bare wires. It is not that hard to replace them if you have a wiring diagram. You can make up new wiring with wire and connectors from the local parts store. Link to comment Share on other sites More sharing options...
gregchrysler Posted August 1, 2014 Author Share Posted August 1, 2014 Thanks rusty again. I have power at the battery side of the coil but the negative side has power for 2seconds then no power . Then I get no spark. Help again. Link to comment Share on other sites More sharing options...
gregchrysler Posted August 1, 2014 Author Share Posted August 1, 2014 Can u please get me the values of the resistor. Thanks again Link to comment Share on other sites More sharing options...
gregchrysler Posted August 1, 2014 Author Share Posted August 1, 2014 I did have frayed wires from the ignition switch and replaced them Link to comment Share on other sites More sharing options...
JACK M Posted August 2, 2014 Share Posted August 2, 2014 Since the breaker is doing what it is supposed to, it sounds like you have a short. Not a defective breaker.You could jump around the breaker and see where the smoke comes from. (don't do this, it was an attempt at humor) Link to comment Share on other sites More sharing options...
Rusty_OToole Posted August 3, 2014 Share Posted August 3, 2014 (edited) The neg side, is the "ground" which grounds thru the points. When the points are closed, the circuit is complete, the coil is grounded. When the points open, the circuit is broken and the spark fires. I know that sounds backwards but that's the way it works.I don't know what you mean by power for 2 seconds then no power unless the points are opening (engine turning?).The resistor is 18 ohms, the breaker is 30 amp.PS the wiring diagram I referred to is small and blurry but it looks like 18 ohms. Could be 13 or 15 so if you test it, and it is not exactly 18 it is ok. Unless it is completely open or completely shorted it should work. Edited August 3, 2014 by Rusty_OToole (see edit history) Link to comment Share on other sites More sharing options...
c49er Posted August 3, 2014 Share Posted August 3, 2014 The resistor is 12 ohms. Right out of the "Mr tech" book. Link to comment Share on other sites More sharing options...
Rusty_OToole Posted August 3, 2014 Share Posted August 3, 2014 Thanks. Link to comment Share on other sites More sharing options...
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