I agree with Challenger & I'm in a minority here but I consider the ECU just a (coil) primary current on/off switch & as long as it ain't pulling timing like the newer orange boxes reportedly do (I never plotted a timing curve chart) that a good made in USA one is fine & the real power is in the coil/ballast (or no ballast) combo. The standard motor products LX101 was a good standby tho I bought one the other day & it is made in china now (ran OK & turned out the prob was my black FBO coil was what had died)

usually heat is the culprit,take your non working one and hog out the clear insulation in the back.usually its a bad capacitor.unsolder and take to radio shack or electronic parts place and get another capacitor.usually under a few bucks.solder it back and silicone the back side and problem fixed.do it yourself and save money.bad capacitors usually bloat up or leak so its easy to tell after you remove insulation goop.always have a good ground also..

Orange / Chrome / Gold ECU deal....

Up until approx. 10 years ago, Chrysler made these in-house in Huntsville, Al (Think: Guided missiles...Apollo Moon missions....).

Nowadays: All vendor-supplied from who-knows-where.

Rick