This switch can cause multiple problems with the system & can be intermittent. Replacement service switch to replace the old slider switch it comes with terminal connection & colour codes on board so easy to connect no loops to figure out as all done on the board & is complete with new housing so is an easy change I have tried & tested these & they work great. For info 07969140530 Any questions please ask Will fit all models R84-94 RI-3-4-5 & the later CTI-models I have other R84-94 parts available please ask I may have it.