Brake light issue 87FC35

[Wilhelmus Schreurs]

.Alan:
On my 84 the retarder only worked in manual mode, and yes the lights did go on. I believe on the latter models, an additional circuit was installed with the throttle, ( a micro switch or mercury switch that works off the throttle) this would allow you to leave a setting on the retarder and then whenever there was no throttle, the retarder would come on. If the retarder switch was in low mode and the switch was cycling you would not feel much a power difference.

The switches that Ralph eluded too, are small pressure switches, when you apply the brakes, pressure closes the switches completing the circuit.

Bill
1988 40WB XXV "Anniversary Special Edition" (HERS and she not sharing)
Terrace, B.C. Canada eh