Includes relay, circuit breaker, and switch - NO instructions included
What you see here in new old stock. It is very hard now to find these inline heaters. I don't even think this heater is made anymore. You will need a separate power relay to drive this heater ( about 15 amp draw) and an inline fuse or circuit braker and a switch to turn it on and off. These are included but no wiring diagrahm or instructions. You will need to be familiar with auto electrical wiring to install this.
SVO WVO Stanadyne Inline Fuel Heater with Extras
$118.00
SKU:
SVO-STDYEHEATER 
Product Details
The small tab you see on the lower pipe is to connect a ground wire.
