If you are using the two-wire interconnect option from ELT to remote - check that you have good grounds to the airframe at both the ELT and at the T-adapter.
Page 64 - http://www.ameri-king.com/pdf/IM451R...ublication.pdf
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ