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Another PWS Loom Q
Dick Axtell - 6/4/12 at 12:35 PM

Trying to tidy up wiring in engine bay area. Used PWS Sierra - based loom, and some wires are unused, e.g. wipers, heater.

Two wires now without ID, ('cos I've lost the labels I stuck on them!!!). 1st wire - sky blue, with red pin stripe; I think this connects to my oil press switch (sited in the Xflow block's oil gallery). Appears to meet spec in PWS original sheet. Is this correct? Pls advise.

2nd wire - Black, with blue stripe; what should this connect to?? Have totally forgotten if was needed, so will welcome info as to what should be connected. Cannot find ID on the PWS sheet.

Macbeast - 6/4/12 at 01:39 PM

On mine, Blue/red is dip beam supply from dip switch. I think there are 2 of these so you may only need to use one.
Oil pressure switch should be white/brown.
Like you, I can't find a black/blue

Dick Axtell - 6/4/12 at 04:43 PM

quote:
Originally posted by Macbeast
On mine, Blue/red is dip beam supply from dip switch.

Not on mine. Lights etc all connected & working correctly. Only things not connected, (a) wipers, (b) heater, (c) oil press switch, and (d) water temp sensor.

quote:
Oil pressure switch should be white/brown.

Pretty sure white/brown (or is it brown/white?) connects to water temp sensor. Guessing black/blue wire must be for the heater (by elimination process!). Gotta re-check wiper motor wire colours.

Dick Axtell - 19/4/12 at 08:54 AM

Found PWS newer website, and contacted them. Finally got definitive answer to my lost wires 'ID' prob.

Alan (PWS) replied with the following :-

Blue/red - connectes to - electronic oil pressure gauge (if required),

Black/blue - connectes to - switched earth for screen washer bottle (had totally forgotten this one!!),

Brown/white - connectes to - water temp,

Brown/green - connectes to - oil warning light (got it!!).

theduck - 21/4/12 at 09:00 PM

If anyone wants it I have a wiring colour guide for original Sierra and pws Sierra looms.