extends from socket 32 each of the conductors 34 a b c has a free end which carries an insulator such as 34 a 1 each insulator covers a respective pin 34 a 2 which is compatible with a respective socket element in a socket such as socket 14 a the conductors 34 a b c of adapter 30 are inserted into socket elements in socket 14 a those pins thus engage the respective socket elements safely and conveniently the plug 16 2 of replacement detector 16 can be coupled to adapter socket 32 so as to receive power and signals off of cable 14 fig4 a illustrates an alternate adapter system 40 adapter system 40 has a socket 42 which is compatible with plug 16 2 conductors 44 extend from socket 42 a positioning or locating element such as 44 a 1 is carried adjacent a free end of each conductor each conductor carries at the free end a respective pin such as pin 44 a 2 fig4 b illustrates a configurable shell or housing 46 housing 46 includes a holder 46 a and a spacer 46 b positioning elements 44 a 1 b 1 c 1 can be inserted into and locked in holder 46 a along with spacer 46 b with an arrangement which is compatible with a respective socket such as socket 14 a as illustrated in fig4 c the pins 44 a 2 b 2 and c 2 extend from holder 46 a forming a plug 48 the plug 48 is compatible with socket 14 a.