70 charger 12 no spark. "trigger modual" help

[f350scumbags 1]

So I got a 1970 charger 12 and it ran great. It has the kohler k301 12hp engine. It all of a sudden died on me and lost all spark. Iv tracked it down to the "trigger modual" for the breakerless ignition system. I preformed the test and the test light would not come on at all am I doing something wrong or is it shot? I don't want to spend $211us for it and the problem is somewhere else. Thanks!

[gwest_ca-(File Mod) 11,393]

Sounds like you did the test correctly but have never done it.

 

Perhaps someone has a known good used trigger.

 

Provisions to change it to battery ignition should be on the block. The points push rod hole is plugged. 

You would need points and condenser plus mounting screws, push rod, points cover, ignition coil with internal resistor and an ignition switch for battery ignition. The original ignition switch has 4 key positions and is a heavy duty unit that will power the starter. I would use a more common and cheaper 3 key position switch plus a starter solenoid like they used in the mid 1970's.

 

I don't think you have any safety switches to complicate things.

 

Garry

 

 

[pfrederi 18,566]

I assume these are the 2 tests you tried (diode and SCR).  I had to make up my tester by soldering a wire to a flashlight bulb base and then  use 2 D cell batteries.  Make sure your tester is working OK. My trigger would pass the diode test but not the SCR (tapping the magnet). 

[formariz 12,019]

A couple of years ago I had the same issue with my 69 Electro 12. I parked it in shed running fine and next day no spark. Testing the components in ignition system literally drove me nuts since I would always get different results with same test. Not too many people are familiar with that type of ignition even professionals. Also the cost of replacing the three components in that ignition was a shock to me along with the fact that they are not always easy to find. Seeking advice from everyone I could find I went to the local repair shop that was in business for over 50 years. None of the mechanics knew anything about that system, but the elderly owner that just sat on the side with his trusty old dog, was listening and called me over. He told me then that not much ever goes wrong with the external components, meaning the trigger and coil which is what I was basing my diagnosis on, that most likely the problem would be under the flywheel . So based on the new information I went home and started looking at that, by first tracing the wires coming from stator. Sure enough I see right away that at the rectifier, which is in a crazy place to service, the connectors came loose and shorted there, frying the stator. I was happy to find the problem but not happy to find out how hard it is to get that part and what it costs when found. Eventually I got real lucky by accidentally finding some guy selling NOS parts for a Case tractor That had all three components  NOS in the original boxes at a total steal.

 

So I would take a close look at the rectifier before you go nuts with the trigger and coil.