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Powered ute shutter lid not working as it is shorting out somewhere so unable to use

Seeking highly rated, experienced, punctual, reliable and professional installer to put a kicker amp under the seat and install central locking. If feasible reconnect reverse camera which I’ve not been able to get working after installation of new head unit (think it’s the remote connection from the reverse light but I’m over it!) Amp to be secured under drivers seat, power to battery, remote to head unit, earthed, cables routed back up to join the factory speaker cables behind the head unit. Central locking kit just been delivered, not yet opened the package so not too sure what’s involved. All components, wiring etc supplied. Possible exception being mounting of amp to floor but have various nuts, tap and die kit etc to affix. Timing is firm, additional work available for dash cam, immobiliser etc in the future. This would take me probably a (long) day to do so expecting this to be a half day job for someone experienced. Preference given to polite tasters who can communicate in full sentences!