extra radiator fan

BX Tech talk
bill o
Confirmed BX'er
Posts: 65
Joined: Mon Jun 26, 2006 11:28 pm
Location: ASHFORD KENT

extra radiator fan

Post by bill o »

I would like to instal twin fans to my 1.9 diesel,I have the fans which i salvaged from my old tzd,and would appreciate any advice on wiring them in,i am planning to tow my caravan to scotland so this is why i could do with the additional cooling.l
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electrokid
1K Away
Posts: 1764
Joined: Fri May 09, 2008 2:14 pm
Location: Woking

Post by electrokid »

I would like to instal twin fans to my 1.9 diesel
Me too :-)

I plan to do something fancy - but the easiest way is to buy a 2 pole switch to replace the single pole one that is already at the bottom of the rad - I've seen them on eBay - in fact I have one on my 'watching' list at the mo -

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... K:MEWAX:IT
1992 BX19 TGD estate 228K Rusty - SORNed
2002 C5 HDi SX estate
prm
BXpert
Posts: 192
Joined: Tue May 01, 2007 7:54 pm
Location: Surrey

Post by prm »

If you can understand my hieroglyphics

Drawing of twin fans using relays that may help.

Relays can be mounted on the vertical section of the o/s inner wing, just forward of the LHM tank to avoid long cable runs.

http://i295.photobucket.com/albums/mm15 ... fans_1.jpg

http://i295.photobucket.com/albums/mm15 ... ods1_1.jpg


You could also include a fan run-on system with a fused direct feed from the battery by splicing into existing fan/s supply from R1. Then connected to new relay terminal 4, also linked into ter.1 ---coil +.
Fused battery + supply, into terminal 3. ....Terminal 5, no connection.
Terminal 2, negative/earth return.

Rather than connecting the + supply onto the battery clamp, you may find a spare spade connector on the main + supply terminal block, forward from the battery.

Relay coil should energise with ignition on. Then provide a direct feed from battery for fan/s run-on with ignition off.


There’s a section on the main drawing mod. Just install an additional std. BX relay on the bulkhead.


Regards