Honda HR-V Alarm advice

[telboy1938]

I have a Honda HR-V 4 x 4 fitted with Thatcham Cat 2 but as I am hard of hearing I cannot hear if the door locks when in a noisy environment. Therefore I would like to either get the indicator lights to flash or the horn to sound or both. Any advice on how I could do this would be most appreciated. Honda want in excess of �400.00 to fit a unit .....Thanks. Tel