??? In / Re Blower Motor Relay Up - Grade
#1
Registered User
Thread Starter
??? In / Re Blower Motor Relay Up - Grade
Regarding Jim Lane's blower-motor relay up-grade :
Would it work to step up blower-motor voltage/speed by adding a relay-switched direct-from-the-HOT wire, spliced directly into the blower-motor wire at the motor, with the relay triggered by a seperate toggle-switch, independent of any factory switching functions.
Wired thus, the toggle could be activated to give the blower full power/speed on demand, without having to dis-mantle the dash.
Is this do-able; or am I missing something ??
Reason I am wondering is that this could be done as a temporary quickie-fix, until time allows doing it the right way.
Thanks.
Would it work to step up blower-motor voltage/speed by adding a relay-switched direct-from-the-HOT wire, spliced directly into the blower-motor wire at the motor, with the relay triggered by a seperate toggle-switch, independent of any factory switching functions.
Wired thus, the toggle could be activated to give the blower full power/speed on demand, without having to dis-mantle the dash.
Is this do-able; or am I missing something ??
Reason I am wondering is that this could be done as a temporary quickie-fix, until time allows doing it the right way.
Thanks.
#2
DTR's Night Watchman & Poet Laureate
why not use a rheostat instead of a toggle and have variable speed control??
since the motor is 12V, you could simply by-pass all the factory stuff and run straight from teh battery, to a rheo, to the +blower input.... wouldnt that solve it better?
even in your description, why use the realy at all?
since the motor is 12V, you could simply by-pass all the factory stuff and run straight from teh battery, to a rheo, to the +blower input.... wouldnt that solve it better?
even in your description, why use the realy at all?
#3
Registered User
I would think you could run a switch to a relay. I just did the relay trick like outlined in the sticky. I didn't have to take out the heater control. Just pulled the screws and could lift a little to get at the fan swtich. Then open the glove box all the way.(un-hook the stop) That is allows the wire to be ran underhood. I would say you could do it in about two hours. I did mine over a long lunch break.
#4
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Regarding Jim Lane's blower-motor relay up-grade :
Would it work to step up blower-motor voltage/speed by adding a relay-switched direct-from-the-HOT wire, spliced directly into the blower-motor wire at the motor, with the relay triggered by a seperate toggle-switch, independent of any factory switching functions.
Wired thus, the toggle could be activated to give the blower full power/speed on demand, without having to dis-mantle the dash.
Is this do-able; or am I missing something ??
Reason I am wondering is that this could be done as a temporary quickie-fix, until time allows doing it the right way.
Thanks.
Would it work to step up blower-motor voltage/speed by adding a relay-switched direct-from-the-HOT wire, spliced directly into the blower-motor wire at the motor, with the relay triggered by a seperate toggle-switch, independent of any factory switching functions.
Wired thus, the toggle could be activated to give the blower full power/speed on demand, without having to dis-mantle the dash.
Is this do-able; or am I missing something ??
Reason I am wondering is that this could be done as a temporary quickie-fix, until time allows doing it the right way.
Thanks.
#5
Registered User
Thread Starter
#6
Administrator
Regarding Jim Lane's blower-motor relay up-grade :
Would it work to step up blower-motor voltage/speed by adding a relay-switched direct-from-the-HOT wire, spliced directly into the blower-motor wire at the motor, with the relay triggered by a seperate toggle-switch, independent of any factory switching functions.
Wired thus, the toggle could be activated to give the blower full power/speed on demand, without having to dis-mantle the dash.
Is this do-able; or am I missing something ??
Reason I am wondering is that this could be done as a temporary quickie-fix, until time allows doing it the right way.
Thanks.
Would it work to step up blower-motor voltage/speed by adding a relay-switched direct-from-the-HOT wire, spliced directly into the blower-motor wire at the motor, with the relay triggered by a seperate toggle-switch, independent of any factory switching functions.
Wired thus, the toggle could be activated to give the blower full power/speed on demand, without having to dis-mantle the dash.
Is this do-able; or am I missing something ??
Reason I am wondering is that this could be done as a temporary quickie-fix, until time allows doing it the right way.
Thanks.
If you are saying connect the blower motor through a relay Term. #87 installed close to the motor, Term. #30 receiving its FUSED power from the battery and controlling the coil through a toggle switch.
Yes that would work, it will not look purdy but it would work, but I would only do it on a temporary basis.
Having to tear your dash apart gives you the opportunity to inspect the concealed wiring and make any repairs that you would not ordinarily see.
Quote:
why not use a rheostat instead of a toggle and have variable speed control??
since the motor is 12V, you could simply by-pass all the factory stuff and run straight from teh battery, to a rheo, to the +blower input.... wouldnt that solve it better?
even in your description, why use the realy at all?
To handle the 15-20 amperes that the motor consumes you would need a BIG rheostat probably around 100 watts. A rheostat would get HOT, as it has to dissipate the heat, you would probably melt your dash.
If you wanted to control the speed it would be best to use a PWM Pulse Width Modulation controller. I have one that will handle 75 amps continuous and the actual control is a small 5,000-ohm linear taper potentiometer.
Why use the relay at all??
Check out my latest upgrade.
Jim
https://www.dieseltruckresource.com/...=158400&page=4
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