´81 - ´82 rear window defroster switch help
Thread Starter
Heel & Toe
Joined: Oct 2013
Posts: 17
Likes: 0
From: United Kingdom
´81 - ´82 rear window defroster switch help
Hi all - this is a bit of a long shot but here it goes;
Does anyone know or can find out the value of / take a picture of the big resistor top left of the board that sits just above the relay and to the left of the switch contacts on the PCB inside the ‘81-´82 defroster switch? If you happen to have a switch laying around and can open it up? (This would only apply to the big 81-82 switch with integrated relay and timer)
Basically I am fixing my defroster switch on my ‘82. I first found the orange plastic rocker inside had disintegrated and dropped the little contact prong and sprung loaded plunger - so I designed and 3D printed a replacement which worked great, but now the defroster won’t stay on - it turns off as soon as the switch goes back to the middle instead of staying on for 10 minutes.
I then realised one of the resistors is burned out on the circuit board, a likely culprit - the problem is I can’t tell what size resistor it is to replace it as the colours have all charred off!
Any help finding out what is should be would be greatly appreciated
Does anyone know or can find out the value of / take a picture of the big resistor top left of the board that sits just above the relay and to the left of the switch contacts on the PCB inside the ‘81-´82 defroster switch? If you happen to have a switch laying around and can open it up? (This would only apply to the big 81-82 switch with integrated relay and timer)
Basically I am fixing my defroster switch on my ‘82. I first found the orange plastic rocker inside had disintegrated and dropped the little contact prong and sprung loaded plunger - so I designed and 3D printed a replacement which worked great, but now the defroster won’t stay on - it turns off as soon as the switch goes back to the middle instead of staying on for 10 minutes.
I then realised one of the resistors is burned out on the circuit board, a likely culprit - the problem is I can’t tell what size resistor it is to replace it as the colours have all charred off!
Any help finding out what is should be would be greatly appreciated
Thread Starter
Heel & Toe
Joined: Oct 2013
Posts: 17
Likes: 0
From: United Kingdom
Stand down, I managed to guesstimate the resistance by scraping away the coating and measuring from the middle of the coil - its roughly 100ohm. Replaced it with a nice big 5W resistor to be safe and works a treat. Fixed for a resistor and a few cents of 3D printer filament, much better than $150+ for a new switch!
