| Author | Message | ||
| califbob Rating: N/A |
I was making up a cord to match my Toyoto P/U and my Prevost. I had to change stuff due to the fact I towed it with my 04.Any way. I think I screwed up something in the Toyoto wireing. The tach, spedo and heat gauge quit working.Does any one know if I burnt up some computer type stuff or what? | ||
| akrom Rating: N/A |
No, we dont know akrom | ||
| John MC9 Rating: N/A |
Does it smell like bacon? | ||
| David Hartley (Drdave)
Rating: N/A |
Is your prevost 24 volt and have 24 volt tail lights? You may have fried your ecm computer on the truck... Your 04 was probably 12 volt. | ||
| Califbob Rating: N/A |
Hi Dave No I got all the stuff to change the 24 volt lights over to 12 volt. John MC9 asks "does it smell like bacon" What has that got to do with it? | ||
| Tim Strommen (Tim_strommen)
Rating: N/A |
What year Pickup? 1985-95? -Tim | ||
| David Hartley (Drdave)
Rating: N/A |
You may think that I am being silly, But more curious... How did you convert from the 24 volts on the bus to the 12 volts for the trailer/toad/towing harness? Relays? or some 3 to 2 way converter directly? Did you have 2-way diode packs installed on the toad light circuits between the wiring harness and the lights? If you toad is a late model most of them use the ECM computer to control lights,a/c and many systems. The ECM computer can be damaged or destroyed by current backfeeding into them. I know this because I wiped out a buick ecm while testing an a/c compressor clutch manually with a jumper wire to the battery. Cost me $800 to get the a/c and part of the dashboard working again. Just asking??  | ||
| John MC9 Rating: N/A |
Although I meant that in jest (since you provided nearly no information for the question asked), the "bacon smell" may be the epoxy inside the ecm burning. David's got it right. You followed up, saying: "I got all the stuff to change the 24 volt lights over to 12 volt" With a voltmeter, I would test the harness from the bus and find out exactly what voltage is being sent to the towed vehicle. But, even with 12v to 12v hookups, on some of today's vehicles there can be major headaches, even with the diode setups. The easiest way to wire a towed vehicle, and the way to insure against any headaches, is to use a harness and add bulbs to the rear light assembly of the towed. BX8869 Bulb and Socket Tail Light Wiring Kit That won't do you much good now, though. re: -"I was making up a cord to match my Toyoto P/U and my Prevost. -I had to change stuff due to the fact I towed it with my 04. -I think I screwed up something in the Toyoto wireing. -The tach, spedo and heat gauge quit working. -Does any one know if I burnt up some computer type stuff or what?" If you had 12v going to the towed Vehikle, then, I would undo everything I've changed with the towed vehicle's wiring and see if it restores everything. If not, I'd check all fuses... Then, after weeping profusely, I'd dry my eyes and drive it to a dealer that can test it on their equipment. ECMs can be expensive, but usually they fail totally, not just with an item here and there... or at least with my experiences.. maybe the new ones are better? Sounds like the "stuff" you changed may lead you to finding the cure. Undo it, man. Put it all back the way it was first, then look for the problem with that end of things. It'll give you something to do, whilst waiting for the fat guy in the red suit. (Maybe he'll bring you a fire extinguisher!) Cheer up, it's likely something simple. (at least that's my "holiday" wish for you!) | ||
| Richard Bowyer (Drivingmisslazy)
Rating: N/A |
John, I think you left out one important piece if advice. "If you do not really know what you are doing, don't screw with it". Richard | ||
| John MC9 Rating: N/A |
Richard- The world would have never gone beyond the stone age, had that been a good attitude to have. How else to learn; to improve anything, without some experimentation? So what if there's some damage? There is little that can't be fixed, and through the procedure, an education is earned. | ||
| David Dulmage (Daved)
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One of my shop teachers in high school had a sign on the wall behind his desk that said, "The man who never made a mistake never made anything." As a business owner and manager over the years that concept has served me well and probably been a source of comfort to a number of my employees. | ||
| niles steckbauer (Niles500)
Rating: N/A |
With all the inquiries about wiring towed's - Why don't one of you entrepeneurs design a universal light bar that incorporates: 1) individual harnesses for both 12 and 24 volt wired to independent lighting systems 2) magnetic mounts and strap mounts so it is easily adapted to any situation 3) incorporate a flourescent "vehicle in tow" sign on the bar 4) have I@n sell them on this web site on a commission basis Portable, Universal, Simple, Safe, and relatively Inexpensive ..... Hmmmmmm | ||
| Peter Kent (Henisland)
Rating: N/A |
When I wired my Jeep Liberty, I installed the kit that provides bulb sockets that you simply drill into the rear light assemblies. No Diodes or anything to screw with. You could then use 24 volt bulbs if you needed. | ||
| califbob Rating: N/A |
Lots of good advice. I got the 24v to 12v set up from Jim Wright Wrico). Every thing worked fine I was happy as a clam untill I got in my p/u to go home and found most of the gauges don't work any more including the a/c. It's a 99 Toyoto 6 cyl stick shift, I also have a 85 with over 200,000 miles on it. Toyotos seem to go for ever. I towed the 99 behind my 04. When I wired it I had to put in the black box to go from a 2 wire system to a 3 wire. I had a couple of my bus friends tell me to just add 24v bulbs. It sounded to simple. | ||
| John MC9 Rating: N/A |
Yeah. Sounds like David might have had it right, right off the bat. Check the voltage at the bus end first, to make sure. If you had 24v going into that 12v vehicle, it's likely $$$ time. If you replace it today, the parts guy can get his kid that house in Bermuda for Christma....oooops.... "the Holiday". | ||
| Stephen Fessenden (Sffess)
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24 volt bulbs on a separate wiring system for towing are a great ideal. It is pretty easy to drill a hole in the plastic taillight housing and install a separate bulbs for the toad lighting circuit that are not connected to the car wiring in any way, except for the common ground. | ||
| califbob Rating: N/A |
found the problem today. Total cost to fix 3.75 Thanks for all the advise. Happy New Year and Merry Christmas toall. | ||
| John MC9 Rating: N/A |
Tell us what it was, fir &*^%^%#... | ||
| califbob Rating: N/A |
It was an obsure fuse that was blowen. If I do another 24v to l2v it will be by drilling holes in the recepticles and put in 24v bulbs. Thanks for all the help. | ||
| John Mc9 Rating: N/A |
Good goin' Bob! Real glad to see you fixed it! I guess there really is a Sandy Claws after all, huh? Happy Holidays! | ||
| Buswarrior (Buswarrior)
Rating: N/A |
hahahahahaha! califbob, great cliff hanger for the next episode! Glad is was a cheap fix! Niles, want to go in together on a design? We'll talk in Arcadia. happy coaching! buswarrior |