Step one. Bought the van.
Hello Everybody, First post. I camp a lot in tents but after spending three days straight in a tent in the rain at Dolly Sods I swore I'd make a change. Here it is. Bought it Wednesday. Dro...
Forum Discussion
Upgrading the Blower Motor Controls - Post #2
This is the potentiometer (pot) on the Maxx Tronic circuit board. The pot controls the motor speed. After opening up the dash I see that I won't be able to mount the circuit board directly behind the CCC. I'll remove the pot from the circuit board and solder on wires between the pot and the board. This allows the pot to be mounted away from the circuit board.
Here is the power connections on the circuit board. They are labeled "G", "-M", "+M" and "+12V".
I haven't tested the control module yet so after desoldering the pot and rewiring it I temporarily wired up the motor controller to the blower motor.
Here's the plug for the blower motor. The PWM controller board worked fine.
With the exposed electrical connections on the motor controller circuit board I can't mount it directly inside the dash. Have to first make an insulating plastic case. Build it out of scrap acrylic pieces.
There are two large heat sinks on the circuit board so I added a small fan that will draw air through the case to aid with the cooling.
Next add a small latching relay. This relay serves the same purpose as the ones I used in the radio circuit previously posted about. It allows the fan circuit to be switched with a momentary switch.
Vent holes to help with cooling.
Added a relay so the full fan amperage doesn't go through the selector switch. The switch will just power the relay.
The completed unit.
Now that it's been built I know how much space is needed inside the dash. Look around for a place to mount it.
This fits the bill. It's the metal "shelf" that sits above the engine and is directly forward of the dog house. I've already used a spray cleaner on the shelf. It wasn't near this clean to begin with.
Test fit.
Want to mount the control module in it's plastic case so that it's held securely in place but still be able to remove it if it needs servicing. So decided to make a mounting plate from a piece of the Webasto fuel pump shield. This piece was leftover after I shortened the shield to fit the new greywater tank. Using a vise and pliers to bend it into the shape I want.
Use VHB tape to mount the plate to the shelf. VHB is a acrylic foam tape made by 3M that claims to be strong enough to act as as alternative to screws. So consider this to be a semi-permanent installation.
Use cable ties to secure the plastic case to the mounting plate. I can snug up the plastic ties pretty tight so the case doesn't move and if I ever need to remove it just cut the ties.
continued -
This is the potentiometer (pot) on the Maxx Tronic circuit board. The pot controls the motor speed. After opening up the dash I see that I won't be able to mount the circuit board directly behind the CCC. I'll remove the pot from the circuit board and solder on wires between the pot and the board. This allows the pot to be mounted away from the circuit board.
Here is the power connections on the circuit board. They are labeled "G", "-M", "+M" and "+12V".
I haven't tested the control module yet so after desoldering the pot and rewiring it I temporarily wired up the motor controller to the blower motor.
Here's the plug for the blower motor. The PWM controller board worked fine.
With the exposed electrical connections on the motor controller circuit board I can't mount it directly inside the dash. Have to first make an insulating plastic case. Build it out of scrap acrylic pieces.
There are two large heat sinks on the circuit board so I added a small fan that will draw air through the case to aid with the cooling.
Next add a small latching relay. This relay serves the same purpose as the ones I used in the radio circuit previously posted about. It allows the fan circuit to be switched with a momentary switch.
Vent holes to help with cooling.
Added a relay so the full fan amperage doesn't go through the selector switch. The switch will just power the relay.
The completed unit.
Now that it's been built I know how much space is needed inside the dash. Look around for a place to mount it.
This fits the bill. It's the metal "shelf" that sits above the engine and is directly forward of the dog house. I've already used a spray cleaner on the shelf. It wasn't near this clean to begin with.
Test fit.
Want to mount the control module in it's plastic case so that it's held securely in place but still be able to remove it if it needs servicing. So decided to make a mounting plate from a piece of the Webasto fuel pump shield. This piece was leftover after I shortened the shield to fit the new greywater tank. Using a vise and pliers to bend it into the shape I want.
Use VHB tape to mount the plate to the shelf. VHB is a acrylic foam tape made by 3M that claims to be strong enough to act as as alternative to screws. So consider this to be a semi-permanent installation.
Use cable ties to secure the plastic case to the mounting plate. I can snug up the plastic ties pretty tight so the case doesn't move and if I ever need to remove it just cut the ties.
continued -
