86 pete 359 - running new wires to trinary switch and ac. also need to have air fan engage and disengage when head pressure rises. How to hookup these new wires.
Optional Information: Make: Other Model: 359 Year: 86 Already Tried: I know one wire is for hot and one is for ac compressor on trinary but not sure about the other 2 wires or how the air fan engages when head pressure rises
Hi let me see if I can help you.
i see you are not online at the moment. Here is a resource that should help you figure out how to hook up a trianary switch.
http://www.evercohd.com/images/tech_tips/EVHD_Trinary_Switches.pdf
Let me kn ow if you have any other questions.
are you there
i found that earlier when online and tried it but fan isn't cuttin in and out when high pressure rises
replaced trinary switch and also bought new ac termoswitch
I take it thw ac will work but you have no fan control
i got it to work by bypassing and making power directly to compressor
ok do you have gauges on the system
i had a switch on the dash that would engage fan when head pressure was up than disenage when down and also you could flip on full time if needed
system is fully charged and as long as i keep fan engaged full time head pressure remains low
are you getting cold air out of your vents
yes system is working but now i have to wire in a toggle switch so the fan engages and disengages when head pressure rises
was there a trinary swich in the system or just a pressure switch
the driver i had on the truck cut the wires out (for something to do) cause he thought he was smarter than peterbilt on electrical system
system has a 4 sspade trinary switch always
i see if it had a trinary switch you could check volts at the switch. by leaving the fan off you should be able to check for the output when the head pressure is to hi. then you can wire your existing fan switch into that spade connection to get the fan iworking on hi pressure
so if i understand - switch - 1 wire to make it hot than one wire from the switch to the #3 term on trinary
than the wire from trinary switch to fan clutch
also #3
if that is the hi pressure connection then yes. my diagram shows the following
black wire power to compressor black/white to ac thermostat yellow to fan organe or red to power
orange or red to power
can you draw a diagram showing how to wire in toggle switch to trinary switch so fan will engage when needed and also i can flip toggle on if need to engage fan full time
yes give me a little time
thankyou. this way i can wire this up and get back on the road today is a cool 106 outside
would it be easier for you to scan and send to my email
give me your email and i will send it to you
XXXXX@XXXXXX.XXX
leave the at symbol out put space where at would be
i can't see your email it is blocked
countrycowboy nine nine five two at yahoo
did you get it
yes message sent
i am wrong about the toggle switch just hook up the trianary switch directly to the fan
got it now how do i pay you
i highlighted great svs and fixin to hit submit next
how have you paid in the past
thankyou for your help and look forward to your help again
their is money on creditcard deposited on this site
ur auppose to get 29 dollars
thank you and i hope this sorts things out for you
thanks
Experience: Diesel Truck Mechanic for over 34 years. Specialize in Thermo King and Carrier Transicold refrigerated units
HiI'm just following up with you to see how everything is going. Did my answer help?Let me know,TKMAN