clifford 3.5 problems 98 prelude

installed matrix 3.5(manufactured at least 1 year ago, the ones where the RS harness has a connector in the middle) 2 way alarm into 98 prelude. Eveything worked great for him for several months.

Now:

alarm often does not respond to remote

door locks cycle or pulse the lock or unlock more than once

you can hear a ticking sound form the brain sometimes, like a small relay clicking over and over again

sometimes it will RS, sometimes it doesnt do anything.

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I have swapped the brain out with no change

Ground and power connections test well.

? could it have anything to do with a bad remote?

any suggestions/ experiences would help

thanks in advance