So would anyone know how to check this amplifier and or coil or maybe know what type readings you should get maybe on DVM? The reason I am asking is I purchased one and now it does not seem to work anymore and read about others having similar problems in some reviews. This was purchased to fit my 85ESL69S motor which was working fine on the original Motorola that came with motor originally. After looking at the condition of the wires most all insulation was gone and the wiring itself just brittle along with the two wires going to the points so I decided it would be best to replace this so I ordered the new 0777647 kit that replaces the original 0383299 amplifier assembly. Wired up as per instructions very easy and straight forward fired right up on the hose so let it run about 30 minutes or so turning it on and off and no issues at that time. Decided to go put it in the water and it didn't really fire right up like it did at the house but did manage to get it running and idled away from the launch about 3 to 5 minutes and it shut off to not run anymore. Brought it back home messed with it but no luck. So today I decided to temporary wire up my old original amplifier and coil just to see what would happen and it fired right up and run. So that being said have I got a bad unit or something happened to it since it ran the 30 minutes it did just fine? It did not come with any ohm test or such to check it for correct operation but thought someone out there may know how to check one or what the ohm readings should be.