Instruments 550

My rear bonnet switch hasn't been functioning for over a year, and I just got around to buying a new switch. Unfortunately the switch was a "call" on ricambi website so figured I would just order from Eurospares. They informed me part is NLA. In messing around with switches to make sure I knew the problem, I found that the gas lid switch is the same as the rear bonnet switch other than label as my trunk opened when I switched the gas lid switch with the trunk switch. Also the switches are easily taken apart with a thin flat head screwdriver. I was planning to buy a gas lid switch and trade out the outer housing label with my old since they were interchangeable. Easy and takes 5 minutes. However, I took the entire switch apart, which again is very easy with a flat head screwdriver, and i scraped the contacts inside the switch to see if it would make a difference. Put back together and gave it a shot. Works perfectly, opened trunk 10 times in a row. I would suggest taking the switches apart and checking the contacts prior to buying a new part if one seems to fail. Be careful, there is a small spring in the housing that can fly out when disassembling. Hope this helps...

 

Hello Asgor - I am looking for a trunk (console) switch for a 550. I took mine apart, and there is a broken tab on the button...Appreciate it if there are any suggestions.

 

When you have an electrical component that isn't working or is intermittent, try soaking it in a product named ACF50, It is a Aircraft rust and corrosion inhibitor, and can be bought at many Aircraft supply stores. It dissolves rust and corrosion and leaves a protective coating on the contacts to prevent corrosion from coming back. Usually there is no need to disassemble the part. It is also a good idea to put it on electrical connections when unplugging them and plugging them back in to keep corrosion away.

 

This works well too...



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The switches on the console do not have contact points that can be accessed, they have a sealed micro switch that is activated by a tab on the rocker.