The Coleman is the right one...I just forgot which company walmart carried...
Then, go back in the auto accessories section and find one of these.....
Advance Auto Parts: In-Line Fuse Holder for Glass Tube Fuses by Bussmann - Part HHK
I couldn't find the in line fuse holder on the walmart website but I'm pretty sure they carry them...
Now, when you get home you're going to have to tear the cigarette plug apart and see which wire is soldered to the center post of the cigarette plug...this is the positive wire....the negative wire will be soldered to the outer metal case of the cigarette plug...
Mark the positive wire, cut off the cigarette plug and attach one end of the in line fuse holder to this positive wire coming from the inverter...
Now, you should have the Coleman inverter with 2 wires coming out of it....
Positive is the one you attached the in line fuse holder to..
Negative is the other wire...
Now, when you receive your power cord from HB...it will have 2 wires coming out of it...
Positive is the red wire...
Negative is the black wire....
Attach the HB power cable wires to the Coleman inverter wires...
HB red wire to the in line fuse wire coming from the inverter
HB black wire to the other bare wire coming from the Coleman inverter...
Install a 3 amp buss fuse in the fuse holder and you should be ready to go....