I studied mechanical engineering in the 1980s and worked all my life in indoor ornamental fish farms with water and 230 Volt wiring all over the place, so I know the risk of electricity. Easy-peasy.Įven though wood is non-conductive, there are no exposed high-voltage windings that could be contacted anyway - for one thing they are coated in lacquer, secondly the high-voltage windings are actually the inner core of the trafo, the outer windings are the low-voltage ones so even if you did contact them with something conductive, there would be no danger other than a possible overload.īut I suggest the combined thickness of the wire and toothpick should be just about perfect until you can get the correct plugs. Strip off about 5mm of the wire sheath, twist the exposed wires to make them more rigid, push into the correct socket then push in a toothpick to wedge the wire.

Just a suggestion, you could easily secure the wire into the sockets (as a temporary measure), with wooden toothpicks.

i looked quick on ebay, they got hundreds of em or start calling hobby shops dealing in euro-trains. in there and got a real thrill! either that or the train went extremely fast. i wonder if this change came about when too many kids stuck coat hangers etc. the later blue transformers had threaded posts with knurled nuts (similar to the old lionel type) where you didn't need the plugs. don't try sticking anything else in there because you may go too deep and hit high voltage (120v). Is this correct and 100 w vs 50 w are different or is it the years that are different? Ive never seen a 74 100w wiring to know.Yes, i would use the marklin plugs. I have a 74 50 watt that has the newer selector rotoray on the back and I assume its wired properly at 4 = yellow, 8 = green, 16 = grey. From everything I have found this is wrong but Im wondering if there is a reason someone would have done this? It was serviced by plexi palace years back and its hard to think this would be overlooked. So when you hook it up you get 4 = green, 8 = yellow, 16 = black. On the inside it is wired just like the 72 but on the back, the selector switch numbers for 4 and 16 appear to be scratched off and swapped with new writing. Someone has resoldered the connections at some point but it appears to be right.

I have a 72 100 watt that seems to be correct at 4 = black. I am trying to find answers on vintage marshall color codes for OT to make sure my amp/cab is matched.

Transformer wire color codes