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Motronic pin number identification Sun Sep 10, 2017 2:52 am
KiwiK100
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Gold member
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Hi all, got my 1991 4V K1 running today for there first time since I started the restoration over 12 months ago. When I bought it I suspected the fan was not running at temp and sure enough it doesn't. I did run the temp up to about a needle width shy of the red zone before I chickened out and went for a run up the street to cool it down. I have searched and read heaps here. I have fed power to the connector under the seat and the fan runs. I have been fastidious in the cleaning of all connectors and the temperature sensor below the radiator was cleaned including the thread until it looked like a new one. New washer too. Advice on checking the relay is to ground pin 16 of the Motronic. Fine, but which is pin 16? I have searched and searched for diagrams but can't find it and obviously don't want to guess... Can someone please post a pic of the Motronic cover identifying the pin sequence. Once this is sorted I can look at the sensor if needed. Thanks very much.
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Current rides:
2020 R1250RS. Metallic black with all the fruit
1983 K100C. Red. Krauzer fairing.
1984 K100RS. Madison silver.
2002 K1200RS. Owned from new. Pacific Blue, Ohlins, Speiglers, Fiamms, HID. 186,000km SOLD
![Crying or Very sad](https://2img.net/i/fa/i/smiles/icon_cry.gif)
1991 K1. Schwartz metallic black, 18 month frame off restoration. 74,000km SOLD
![Crying or Very sad](https://2img.net/i/fa/i/smiles/icon_cry.gif)
1987 K100RS Style. Black, Ohlins, Race Tech springs, Braided lines. Fully restored. 53,000 miles. SOLD
![Crying or Very sad](https://2img.net/i/fa/i/smiles/icon_cry.gif)
The family history:
1951 AJS 500 single - my Dads ride
1953 Triumph Terrier - my Mum's ride
1916 Triumph Type H, Battle of the Somme, France WW1 - my Grandads ride