xt
Quote:
Originally Posted by sixto
Repeating and building on what ah-kay said, the glow relay temp switch is usually on the side of the head by the IP. The bigger device on the side of the head is the gauge sender. The 3-prong temp switch is for the fans at high speed (lower temp trip) and AC compressor cutoff (higher temp trip). The temp sensor beside the 3-prong’er is for EDS.
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Picture here:
https://imgur.com/5zTtwN8
Didn't take picture of the gauge temp sensor;
Gauge temp wire goes under intake manifold middle of head.
3 prong has 2 wire connector to AC (bu/gy & br/yl) and one wire connector on the third prong to glowplug relay (white).
Next to 3 prong switch there's another sensor, with one wire, to EDS (gn/rd).
Green wire is not connected to anything on both ends so disregard.
Water pump has a hole on the side but no sensor (thermo-time switch).
By the way, according to ETM the 1987 glowplug relay didn't use any external temperature sensor. Relay is from 350SD I think, since it is for 6 cylinders. Leaving its temp sensor cable disconnected doesn't change anything. I don't know yet where I will connect it. Just ordered 008-542-45-17.