hi guys towed my caravan for the first time with my signum i bought a couple of months ago with no probs i bought a caterman tuning box off one of the guys on here everything sound until i was towing on friday and the dredded car with the spanner come on and i lost power car still kept going just no power so i thought maybe its the tunning box so ive took it off and i still have the same problem and help would be appreciated thanx
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