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SPAL Thermoswitch Relay and Wiring Harness Kit

Specs
Sold in Quantity:
Kit
Thread Pitch:
3/8" NPT sender, 1/2" NPT bushing
Temp. Range:
-
Notes
Includes heavy duty relay with color-coded wires and a fuse holder.
SPAL Thermoswitch Relay and Wiring Harness Kit

Click image to enlarge

Details

Reviews

Q & A

What's in the Box

This easy to use cooling fan relay kit includes a labeled wiring harness, 40 amp relay, fuse holder and coolant sensor. Available with 185° on/165° off or 195° on/175° off. Works great with the Spal Pulse-Width Fan Controller.

  • Relay wiring kits are a must-have when installing an electric fan
  • Designed to safely integrate with OEM wiring
  • Waterproof 40/50 Amp relay
  • Printed wires (for ease of installation)
  • 3/8" NPT (National Pipe Thread) stainless steel switch
  • Optional switched override capability
910-64028 Instructions (PDF)

Customer Reviews

Rated 4.7 out of 5 by 18 reviewers.
RATING BREAKDOWN
18 reviews
5 Stars
16
4 Stars
1
3 Stars
0
2 Stars
0
1 Star
1
RECOMMEND THIS PRODUCT:

m1911a1
Verified Purchaser
Osseo, MN, USA
Product Rating

easy to do

July 29, 2014
good instructions, works as advertised, only took about a half hour to install.
Yes, I recommend this product.
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Travis44
Verified Purchaser
Stanley, NC, USA
Product Rating

Good product easy installation.

May 24, 2014
I have always been pleased with my purchases with speedway motors. Accurate information on products, good prices and fast shipments. Thanks!
Yes, I recommend this product.
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HarleyJake
Verified Purchaser
KC
Product Rating

top quality components used in this kit

September 18, 2013
great product---well worth the money and no hassles---Its all in there and plenty of wire to work from !!!
Pros:
  • it all worked the 1st time-great instructions
Yes, I recommend this product.
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tommy541
Orlando, FL, USA
Product Rating

Complete and Easy

December 04, 2012
Spal products usually cost a little more money than competing products. But, in my experience, the old maxim ??_you get what you pay for??_ certainly holds true when deciding which products to buy when you are building a hot rod, cool custom or whatever automobile genre your project falls into. This kit is complete, that means you will not be running to NAPA seven times in one afternoon, and end up sPending more than this kit costs, trying to piece meal your fan relay system together. Save yourself some money as well as some out-loud-cussing and just buy this kit.
Pros:
  • complete and easy
Cons:
  • maybe too complete
Yes, I recommend this product.
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musturdbucket
Verified Purchaser
Tucson Az.
Product Rating

Piece of JUNK

May 26, 2012
doesnt make elect. fan come on until temp gauge maxes out then wont shut fan off. I WILL be returning this junk for a FULL refund!!!!!!!!!!!!
No, I would not recommend this product.
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guy
Verified Purchaser
bethlehem, pa
Product Rating

Spal fan relay

September 02, 2012
this was easy to install, plus the wire length was great
Pros:
  • Easy To Install
Yes, I recommend this product.
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Bruce
Verified Purchaser
Geneseo, IL
Product Rating

Spal relay nice complete kit

August 27, 2012
easy to install, very good instructions
Pros:
  • Easy To Install
Yes, I recommend this product.
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3Eagles
Verified Purchaser
Manchester, NH
Product Rating

Just what I needed.

May 08, 2012
Worked perfectly. Now I dont have to watch the gauge and remember to switch on the fan.
Pros:
  • Easy To Install
  • Lightweight
Yes, I recommend this product.
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Big "D"
Verified Purchaser
Indianapolis, Indiana
Product Rating

BE sure to read this!

March 13, 2011
Due to the high amperage neccessary for the initial electrical draw on fan start up, it should be noted that a separate relay and wiring harness should be on each fan installed. When installing two fans, I used two separate thermostat settings as well to come on sequencially.
Pros:
  • Easy To Install
Yes, I recommend this product.
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bulldogdaddy
Verified Purchaser
South, Florida
Product Rating

Incredible Quality

November 16, 2010
Absolutely recommend!!
Yes, I recommend this product.
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Page 1 of 2

Product Q&A

8 questions : 15 answers

Will this work on a dual fan setup?

1 answers
rudifus1
December 06, 2014

Will this work on a dual fan setup?

Answers

December 08, 2014
EricM
For dual fans you need one relay per fan. A second relay such as 91064044 would be required.

What temp. switch would I use on my A/C condenser fan? 29 Ford sedan, 350 V-8. A/C condenser fan is under chassis just in front of differential, at a 30 degree angle with a fan mounted on it. I expect tot use another to turn on the electric fan on the engine. What temp do I need there? 195 degree? Thanks, dave

1 answers
kopq
central Nh
January 25, 2014

What temp. switch would I use on my A/C condenser fan? 29 Ford sedan, 350 V-8. A/C condenser fan is under chassis just in front of differential, at a 30 degree angle with a fan mounted on it. I expect tot use another to turn on the electric fan on the engine. What temp do I need there? 195 degree? Thanks, dave

Answers

January 27, 2014
EricM
On the temp senders to kick the fan on with AC fan a lot of times comes on with the turn on of the air. It is common to wire your electric fan so that it kicks on when the compressor is running. This would not require a temperature sender, you would just wire a fan relay into your existing AC wiring. On the engine fan it depends on what thermostat you are running. If you have a 195 thermostat there would be no need of the fan coming on before the hot coolant reaches the radiator and thus a 195 would be used. Some customers still use the 195 if they have a lower thermostat to allow the radiator to do some of the work before the fan kicks on. This way it lessens the run time of the fan.

Will this kit work fine with a flexalite 123 cooling fan?

1 answers
Joe13
USA
January 02, 2014

Will this kit work fine with a flexalite 123 cooling fan?

Answers

January 03, 2014
EricM
Yes this kit will work with your Flexalite fan. The fan connector is different between the Spal and Flexalite fans but you can easily crimp a different connector on the wiring in this kit.

can I use this set on a 1935 Flathead motor I will install a Radiator Electric Cooling Fan on my 1935 Flathead motor. Is this kit good for me ?

2 answers
Didier
France
September 24, 2013

can I use this set on a 1935 Flathead motor I will install a Radiator Electric Cooling Fan on my 1935 Flathead motor. Is this kit good for me ?

Answers

July 30, 2014
m1911a1
yes, use the largest spal fan that will fit your radiator
September 25, 2013
Jason
Spal kit number 91064028 has a choice of fan turn on at 185 or 195 and this makes the fan turn on once the coolant temperature in the engine gets to that temperature. Eliminates the need for a manual switch but the relay can be wired for over ride if so desired. The Sender will need to mount on the motor and depending on pipe thread size it comes in 3/8 and also with an adapter bushing.

can the fuse holder be located further then 12 inches from the battery i would like to install under my dash on my23 t about 3 feet from my battery

3 answers
tara
May 22, 2013

can the fuse holder be located further then 12 inches from the battery i would like to install under my dash on my23 t about 3 feet from my battery

Answers

July 30, 2014
m1911a1
no problem, be sure to use the same gauge wire as the wire on the fuse holder.
September 19, 2013
HarleyJake
should not be a problem
May 23, 2013
EricM
If you are using a lead under the dash for the power source such as the fuse box having the fuse by it should not be a problem. With T buckets commonly having the battery under the car or in the pickup bed the main lead commonly comes from the starter for the fuse box. If you have a Speedway or Painless wiring harness there is normally a fused lead for the fan.

170° Thermostat = Which Part #? My truck has a 170° Thermostat. Does that mean I should get the kit that turns the fan (ON @ 185°)/(OFF @ 165°) or the kit that turns the fan (ON @ 195°)/(OFF @ 175°)?

2 answers
jp2code
Longview, TX, USA
April 24, 2013

170° Thermostat = Which Part #? My truck has a 170° Thermostat. Does that mean I should get the kit that turns the fan (ON @ 185°)/(OFF @ 165°) or the kit that turns the fan (ON @ 195°)/(OFF @ 175°)?

Answers

September 19, 2013
HarleyJake
it all depends on how hot you want your motor to run and how efficient your cooling system actually works---if its a regular street engine and not that high of compression----I would recommend the higher setting sender
April 25, 2013
Jason
Part number 91064028 has options for fan turn on and off and with the 170 degree thermostat the hot coolant will enter the radiator at 170 and in many cases may cool the engine to this temperature without the fan running. If you get the on at 185 and off at 165 when the coolant got to 185 the fan would come on to assist and this is what would be recommended.

Can I hook a temperature gauge to the sending unit also?

3 answers
flatheadfan
Minnesota
April 21, 2013

Can I hook a temperature gauge to the sending unit also?

Answers

July 30, 2014
m1911a1
no the sending unit will only turn on/off the fan, put a temp sending unit in the head of you flathead.
September 19, 2013
HarleyJake
you need to go with a sendor in the engine--this will not give you a accurate reading of whats going on
April 22, 2013
Jason
On the Spal kit number 91064028 it includes a grounding style sender to trigger the relay and would not accommodate a gauge also. We do offer a fan control that will work with your temperature gauge under number 91064023 and with any fan a relay is recommended to take the current surge on start up.

Will this wiring kit work with the dual fan set up from SPAL? I bought the dual fan set up from SPAL on here. and i dont see any info if this will work with the dual fan set up

2 answers
sub4158
December 24, 2012

Will this wiring kit work with the dual fan set up from SPAL? I bought the dual fan set up from SPAL on here. and i dont see any info if this will work with the dual fan set up

Answers

September 19, 2013
HarleyJake
should work--its measuring temperature---its dosn't know how many fans is running
December 26, 2012
Jason
You can order just one kit for your dual fan plus a separate relay for the second fan. So each fan should have its own relay but can share the rest of the kit
Page 1 of 1

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