Humphreys Hitch and Trailer Parts
Humphreys Hitch and Trailer Parts Tow Bar Division
Hy-Power Diodes
Single, 2, 3 or 4 Pack Hy-Power Diodes. Includes detailed wiring instructions.
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Single, 2, 3 or 4 Pack Hy-Power Diodes. Includes detailed wiring instructions.


Item:  RM-690
Hy-Power™ Diodes by Roadmaster
Single Park Light Diode - Problem: Electrical damage can occur to the towed vehicle if its headlights are turned on while still connected to the motorhome. Solution: Use a Park Light Diode to stop any interaction between the two park light systems, preventing electrical feedback and electrical damage.
Additional Information:
OEM: RM-690
Retail $12.68 Each
Our Price: $9.99
Quantity: 

Item:  RM-790
Hy-Power™ Diodes by Roadmaster
Single Hy-Power™ Diode - Diodes are used to tie into the towed vehicles's brake light, running light and turn signal wiring, and connect it to the motorhome. Diodes permit electrical current to flow in only one direction - from the motorhome to the car - preventing electrical feedback and the damage it can cause to the towed vehicle's dashboard electronics. If you're using a diode, why not use the best? ROADMASTER's Hy-Power™ diodes have a heavy-duty, anodized aluminum heat sink, and each diode is protected against the elements - all components are housed inside an epoxy-sealed, anodized aluminum case. Four-pack required for most vehicles( 1 left turn, 1 right turn, 2 for tail lights-each side) Includes detailed wiring instructions.
Additional Information:
OEM: RM-790
Retail $12.68 Each
Our Price: $9.99
Quantity: 

Item:  RM-792
Hy-Power™ Diodes by Roadmaster
2-Pack Hy-Power™ Diodes - Diodes are used to tie into the towed vehicles's brake light, running light and turn signal wiring, and connect it to the motorhome. Diodes permit electrical current to flow in only one direction - from the motorhome to the car - preventing electrical feedback and the damage it can cause to the towed vehicle's dashboard electronics. If you're using a diode, why not use the best? ROADMASTER's Hy-Power™ diodes have a heavy-duty, anodized aluminum heat sink, and each diode is protected against the elements - all components are housed inside an epoxy-sealed, anodized aluminum case. Four-pack required for most vehicles(1 left turn, 1 right turn, 2 for tail lights-each side)Includes detailed wiring instructions.
Additional Information:
OEM: RM-792
Retail $25.42 Each
Our Price: $19.99
Quantity: 

Item:  RM-793
Hy-Power™ Diodes by Roadmaster
3-Pack Hy-Power Diodes - Diodes are used to tie into the towed vehicles's brake light, running light and turn signal wiring, and connect it to the motorhome. Diodes permit electrical current to flow in only one direction - from the motorhome to the car - preventing electrical feedback and the damage it can cause to the towed vehicle's dashboard electronics. If you're using a diode, why not use the best? ROADMASTER's Hy-Power diodes have a heavy-duty, anodized aluminum heat sink, and each diode is protected against the elements - all components are housed inside an epoxy-sealed, anodized aluminum case. Four-pack required for most vehicles(1 left turn, 1 right turn, 2 for tail lights-each side)Includes detailed wiring instructions.
Additional Information:
OEM: RM-793
Retail $38.04 Each
Our Price: $29.99
Quantity: 

Item:  RM-794
Hy-Power™ Diodes by Roadmaster
4-Pack Hy-Power™ Diodes - Diodes are used to tie into the towed vehicles's brake light, running light and turn signal wiring, and connect it to the motorhome. Diodes permit electrical current to flow in only one direction - from the motorhome to the car - preventing electrical feedback and the damage it can cause to the towed vehicle's dashboard electronics. If you're using a diode, why not use the best? ROADMASTER's Hy-Power™ diodes have a heavy-duty, anodized aluminum heat sink, and each diode is protected against the elements - all components are housed inside an epoxy-sealed, anodized aluminum case. Four-pack required for most vehicles(1 left turn, 1 right turn, 2 for tail lights-each side)Includes detailed wiring instructions.
Additional Information:
OEM: RM-794
Retail $50.78 Each
Our Price: $41.24
Quantity: 

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