I was looking for more info on this switch. It looks like Steve Saunder's Forum really took off on this idea. Check out their thread here.
Here's a cut-n-paste collection of more data on the switch, and other options available. I haven't checked these out, just going by what the gang over at Saunder's is saying about OUR
Valid for 1975 thru 1987 GoldWings.1994 Geo Metro 1.0L, MR Series
Closed Switch Temp Range=88.5c to 91.5c.
Open Switch Temp Range=82c to 88c.
The Part Number Collection:
- BWD #TFS596 40-5079
- Beck Arnley #201-0817 ($20.00 RockAuto.com)
- Gates #T274 (RockAuto.com $16)
- Borg Warner #TFS596
- Echlin #FS-130 (36.77 NAPA)
- Niehof #WA-639B
- Four Seasons #35934
- Wells #SW504 (AutoZone $15.95)
Looks identical to the OEM switch, no need to modify the connector. Have them cross reference it since there are (2) of the same numbers in their system. One of the numbers is available in stock. Unconfirmed, Roady
- Autozone #002683
- Car Quest #TS-306
A word of caution ... running the OEM thermostat with these Thermo Switches is not recommended. Your fan will be running all the time. I use the Stant 13868 82 deg C. I didn't have a problem with the Geo switch and NAPA #101 Thermostat. Roady
All's fair, eh?
Be careful with the Wells SW504. I had it cross referenced up here and matched up with a BW TFS500. The thread size is wrong (too small ).
I redid my cooling system this winter(fixed leaking vent hole and it turned out to just be the big O ring on the water pump) and while at it had the rad professional cleaned & painted. I replaced the thermostate using one that fits an older Honda Civic and the Geo switch. I can only run the bike in the garage but at idle & reving up the temperature gauge only goes to half the normal operating range & then the fan cycles off & on as it should. The temperature never gets over 1/2 the gauge no matter what I do.
To make life simpler I went to a local auto wrecker and cut out the pigtail from a Geo Metro. Makes it much easier to connect this to the wings wiring.
The bike runs much cooler than it did last year. For those do it yourselfers I would be tempted to pick up a Geo switch and tuck it away in my parts bin while they are still around. Up here they are getting hard to find