I have just installed 9651 but my question is my old bell box only has 4 wires whereas the 9651 has 5 can i link the tamper return -ve or will i need to run a 5 wire lead from control panel to bell box. It say in the manual of the 9651 you can terminate the tamper return with a 2.2k resistor is this ok and if so how.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home alarm systems.