Here is the photo. I placed the switch so I did not have to drill any holes in the dash.
The maker, Dave Pye, suggests mounting it in one of the blank switches on the side of the instrument binnacle. This is a good spot but the only blank one I have is on the left side, and I wanted easy access through the window.
I have ordered one of these which I am hoping will work. It will work if, when holding down the button, it sends a constant signal. For its small price I am prepared to risk it.
DC12V 2CH Channel Wireless Remote Control Switch System | eBay
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