We have an M1010 which was converted to 12v by a police agency before we bought it. To start off with, the electrical system was pretty messed up when we got the truck. The previous owner (who had bought it from the PD a little while before) said the truck ran well, but after getting it, we found that the batteries would drain over the course of 12 hours.
Ended up finding that the wiring under the hood was wired by someone who had no idea what they were up to. Somehow they ended up grounding the positive connections just about everywhere. They had even ran a jumper from the 12v connections to the GND connections on the block on the firewall. We had always seen a few sparks in the engine compartment if we had the hood up and started the truck. The PD also had some sort of switching system in the cab as there was a harness with about 30 wires cut off just sitting by the 4x4 shifter (we traced them back to a lot of cut connections in the engine compartment which we ended up pulling out). But it seems that we have finally found all the messed up connections and also installed a kill switch between the batteries and system to make sure the truck starts. So far the batteries no longer drain by the next day. But I am just babbling, onto my question.
Has anyone who has an M1010 converted to 12v been able to get the A/C unit in the back working? As I know the unit was made to work on 24v.
Our truck still has the A/C unit as well as the compressor on the engine. If you turn on the A/C unit (even with the engine running), nothing happens. The compressor on the engine never kicks in. Only thing that works is just the fan for air circulation. But the fan is not very strong, so I am guessing the unit is getting 12v which is enough to get the fan turning, but not as fast as you would if it had 24v.
I know that the A/C unit works with 24v, so I am thinking if I installed a 12v-24v converter that I might be able to get the system to work (which would be nice to cool my fat butt in the winter). Been looking at the wiring diagrams, but since the wiring in our truck has been hacked up a bit (well more like a lot), it is hard to figure out what is what without another truck to compare it to.
Was just wondering if anyone else has tried or looked into the idea?
Ended up finding that the wiring under the hood was wired by someone who had no idea what they were up to. Somehow they ended up grounding the positive connections just about everywhere. They had even ran a jumper from the 12v connections to the GND connections on the block on the firewall. We had always seen a few sparks in the engine compartment if we had the hood up and started the truck. The PD also had some sort of switching system in the cab as there was a harness with about 30 wires cut off just sitting by the 4x4 shifter (we traced them back to a lot of cut connections in the engine compartment which we ended up pulling out). But it seems that we have finally found all the messed up connections and also installed a kill switch between the batteries and system to make sure the truck starts. So far the batteries no longer drain by the next day. But I am just babbling, onto my question.
Has anyone who has an M1010 converted to 12v been able to get the A/C unit in the back working? As I know the unit was made to work on 24v.
Our truck still has the A/C unit as well as the compressor on the engine. If you turn on the A/C unit (even with the engine running), nothing happens. The compressor on the engine never kicks in. Only thing that works is just the fan for air circulation. But the fan is not very strong, so I am guessing the unit is getting 12v which is enough to get the fan turning, but not as fast as you would if it had 24v.
I know that the A/C unit works with 24v, so I am thinking if I installed a 12v-24v converter that I might be able to get the system to work (which would be nice to cool my fat butt in the winter). Been looking at the wiring diagrams, but since the wiring in our truck has been hacked up a bit (well more like a lot), it is hard to figure out what is what without another truck to compare it to.
Was just wondering if anyone else has tried or looked into the idea?
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