TST 770

SlotownCamp Host Lifetime Member

We recently purchased a TST 770 during Prime Days. Read the instructions and installed all six of the valves (four trailer, two truck). It works great and settings were very easy to modify/change for my vehicles (F350 and 1985 Lance). It is a little slow to pick up all six of the valve core sending units.

I do have a question. Instructions indicate I need to install the signal booster or I may void the warranty. It suggests the tongue as to were to mount it. My question is the battery box is not located there. Where did you run the wires for the required continuous 12 volts? I was thinking I would chase the red power wire that comes from the jack but not sure where it goes.

Any suggestions?

7/17/233:07 PM

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K and DCamp Host Lifetime Member

We purchased and installed the TST 507 last year in our 2022 - 1995. I installed the booster inside the curbside battery box. Simple installation - connect the wires and fasten to the wall. I have has no issues with this install.

I just read the manual and it states to install in the battery box on the front of the trailer. I would consider the enclosed battery boxes to be in front of the trailer, just a little higher.

7/18/236:24 AM

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C21BillCamp Host Lifetime Member

That's where I installed mine (roadside batt box). Connected directly to battery along with a small toggle switch on the + lead. Works perfectly.

7/18/237:04 AM

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davendiCamp Host Lifetime Member

I put my booster on the center of the outside front wall, hidden just below the top of the propane tank cover. I ran the wire down to the 7 pin cable junction box that is under the TT near the front.

7/18/237:46 AM

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SlotownCamp Host Lifetime Member

Thanks all! I placed mine on the passenger side battery box. There was a bus bar in there so I did not have to hook directly to the battery terminals. I thought it might connect more quickly to the monitor in the cab, but it still took a long time.

7/18/2311:05 AM

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C21BillCamp Host Lifetime Member

Here is a monitor mounting solution that works extremely well. It is called a 4 Prong Richter Mount with Tilt and Swivel. It is available from ProClip (proclipusa.com) PN 215058. ProClip will also supply a vehicle mount for your specific vehicle. The TST monitor simply slides down onto the mount. ProClip products are usually $29.99 ea but you can usually find a promo code to at least cover shipping. Not exactly cheap but a very clean solution.