b'Universal Cab Heater Installation GuideContents Included: Making the Hose Connections1) Heater Assembly1. Determine which of the existing heater hoses 1) Instruction Sheetare the hot and return lines and make note of the 2) 5/8 Y Splice HoseConnectorsdirection of flow of each.8) Hose Clamps2. Drain the Coolant Circuit. 1) Fuse and Fuse Holder3. Locate the existing heater hose lines in the 1) Fan On/Off Switch engine compartment and determine a spot where Additional Required Materials: they can be cut and spliced, but dont cut yet! 5/8 heater hose4. Route two new 5/8heater hoses from this spot Mounting fastenersto the cab heater allowing for some extra hose to 14 GA automotive electrical wirebe trimmed later. Plan the hose route carefully with Automotive electrical terminalssmooth curves and no sharp bends. When passing (Installer provided - not included) through panels, protect the hoses from sharp edges. Choosing Your Mounting Location 5. Connect to the Heater first by putting the hose Common locations include cab side, floor, dashclamps on then the hoses. or overhead. The heater can be mounted in any6. Hand tighten only. Allow for some extra hose for orientation; however, for best performance allow 1bends and slack to dampen vibrations to the unit.minimum of clearance for circulation aiming the grill7. Now return to the under hood location for side to the area of the cab to be heated. Choose athe hose splicers. Use the cab heater hoses to location where the hoses and wiring can be routeddetermine the best spot. Cut the existing heater so they will not be damaged during regular use ofhoses, but do not trim any extra hose yet. the vehicle. When determining the best location choose one that is closest to the engine for best8. Install the Y splicers into the main heater lines. It overall performance. The longer the hoses areis very important that you install the Y splicers with run, there is a correlating pressure drop and directthe direction of the coolant flow - seeFigure 1 on heat lost as the coolant travels through the hose.Page 2. For instance a heater in the rear of a bus wont9. Trim the cab heater hoses to length, install and have as much flow and heat output as the sameclamp in place.unit mounted under the dash with all other things**IMPORTANT - DO NOT overtightenassumed to be equal. the hose clamps!!**'